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Involves the application of scientific and mathematical principles to innovate solutions for real-world problems in fields such as infrastructure.

















The reason an ingot used as forging stock is subjected to more than the minimum hot working required to develop contour is to:

  • Remove evidence of cast structure
  • Refine grain structure
  • Impose a more desirable grain direction
  • All of the above

What type of steel has a carbon as its principal hardening agent?

  • Iron steel
  • Carbon steel
  • Alloy
  • Iron carbon

Electoplating complex parts results in:

  • Uniform plate thickness
  • Reduced plate thickness at outside corners and increased plate thickness at inside corners
  • Reduced plate thickness at inside corners and increased plate thickness at outside corners
  • Increased plate thickness at outside corners and increased plate thickness at center areas

In the shielded metal-arc process, the electrode covering may include materials used to:

  • Protect the metal from oxidation during melting and transfer across the arc.
  • Protect the weld bead as it solidifies and cools to room temperature
  • Alloy the weld metal
  • All of the above

Heat treating might cause discontinuities which would probably start at:

  • Heavy and light junctions and sharp areas
  • Smooth surfaces
  • Concave surfaces
  • Within the heavy part of the casting

Capitalized cost of a project is also known as ______.

  • Infinite cost
  • Life cycle cost
  • Life cost
  • Project cost

Non-metallic impurities trapped within the molten metal of a casting are generally called:

  • Blowholes
  • Inclusions
  • Cracks
  • Shrink cavities

Cold shuts are most likely found in:

  • Extrusions
  • Forgings
  • Castings
  • Sintered parts

Name the element that is commonly used in making lasers.

  • Chromium
  • Neodymium
  • Promethium
  • Terbium

What is the reciprocal of the bulk modulus?

  • Compressibility
  • Ductility
  • Hardness
  • Elasticity

A common processing indication in rolled bar stock is:

  • Seam
  • Lap
  • Hot tear
  • Cold shut

what carboxylic acid is found in coconut oil? Lactic acid

  • Lactic acid
  • Citric acid
  • Tartaric acid
  • Lauric acid

As hot working progresses, the energy required for further processing (assuming the temperature of the part is held constant):

  • Increases
  • Decreases
  • Remains constant
  • Any one of the above may be true, depending on material.

Compute the internal energy of ice at 0oC as it is change to water same temperature

  • 1.76 kJ
  • 1.67 kJ
  • 3.44 kJ
  • 5.40 kJ

A weld defect formed as a result of shrinkage is called:

  • Undercutting
  • Heat affected zone cracking
  • A crater crack
  • An incomplete sidewall fusion

Some members in the truss which cannot carry load

  • Two force member
  • One force member
  • Force member
  • Zero force member

Rapid oxidation of metal surfaces during hot working of a mild steel may;

  • Produce a carburized surface layer
  • Produce a product which is thicker then originally intended
  • Adversely affect the cooling rate of the newly formed material
  • Adversely affect the application of some non-destructive test

After solidification, the structure of the outside surface of a casting usually consists of:

  • A mixture of large and small grains having random orientation and shape
  • Coarse columnar grains
  • Coarse equiaxed grains
  • Fine equiaxed grains having random orientation and shape

In fusion welding, preheating will result in:

  • A reduced grain size
  • A harder structure
  • A reduced cooling rate
  • An austenitization of the base metal prior to welding

Cracks may occur at any stage of manufacturing

  • True
  • False

The purpose of metal forming is to:

  • Refine the grain structure
  • Improve the mechanical properties
  • Close blow holes which have formed in an ingot
  • All of the above

Which support has one moment?

  • Frictionless guide
  • Pin connection
  • Fixed support
  • Roller

A fatigue crack is a service defect that is caused by a:

  • Cyclic loading of the part above the yield strength of the material.
  • Cyclic loading of the part below the yield strength of the material.
  • Local overheating of the part.
  • Corrosive atmosphere

The following defect is caused by the melting away of the sidewalls of the welding groove at the edge of a layer of weld metal and runs parallel to the weld bead:

  • Lack of penetration
  • Lack of fusion
  • Undercutting
  • Surface shrink crack

The engineering materials are known as "plastics" are more correctly called:

  • Poly
  • Plastics
  • Copolymers
  • Polymers

Quantities which posses both magnitude and direction are called ____________.

  • Vector quantities
  • Magnitude
  • Direction
  • Scalar quantities

Which of the following is a discontinuity that might be found in a forging?

  • Shrinkage cracks
  • Laps
  • Hot tears
  • Insufficient penetration

An advantage of investment casting over green sand casting is:

  • The mold is reusable
  • Larger parts may be cast
  • More complex shapes may be cast
  • The need for cores never arises

In gas welding, the acetylene is usually burned with:

  • Oxygen
  • Hydrogen
  • Argon
  • Nitrogen

A casting process involving a re-usable mold is called:

  • Investment casting
  • Shell mold casting
  • Dry sand casting
  • Die casting

Fatigue cracking is always caused by a single overloading.

  • True
  • False

Which body in the resent ITU structure took place of CCITT?

  • ITU-R
  • ITU-D
  • ITU-T
  • RAG

Which of the following methods produces a casting faster and at a lower cost?

  • Green sand casting
  • Dry sand casting
  • Investment casting
  • Shell casting

An advantage of shell molding over green sand molding is:

  • Larger castings can be produced using shell molds
  • Lower cost of production of shell molding
  • Better surface finish is obtainable
  • All of the above

In which of the following arc welding processes is the electrode non-consumable?

  • Shielded metal-arc welding
  • Gas tungsten-arc welding
  • Gas metal-arc welding
  • Submerged arc welding

Metal has the property of:

  • Failing to unite if too hot
  • Retaining large grain structure when forged
  • Occupying more space when molten than when solid
  • Having a larger grain structure when molten than when solid

Severe grinding cracks appear as:

  • Wave like patterns
  • Widely spaced cracks
  • Lattice-work or checkerboard patterns
  • A single crack

Arc welding is usually performed using:

  • Alternating current, low voltage and low amperage
  • Direct current, low voltage and high amperage
  • Direct current, high voltage and low amperage
  • Alternating current, high voltage and low amperage

A large semi-finished hot rolled product, approximately square in cross section, and whose cross-sectional area is usually not less than 36 sq. inches is called:

  • A bloom
  • A billet
  • An ingot
  • A slab

In which of the following casting processes are cores never used?

  • Shell and mold casting
  • Investment casting
  • Permanent mold casting
  • None of the above

When a pouring gate in a casting blocks off prematurely, it can cause many small, subsurface holes. This condition is called:

  • Hot tears
  • Crater cracks
  • Microshrinkage
  • Seams

Bursts usually have the following characteristics:

  • Appear as smooth indentations on metal surfaces
  • Are cavities varying in size from wide open to very tight, usually parallel with the grain
  • Are extremely thin and flat, generally aligned parallel to the work surface of the material
  • Are three dimensional discontinuities having smooth internal surfaces and generally located close to the surface of the wrought material

Forming a taper, or a reduction of metal products such as rod and tubing, by forging is called:

  • Swaging
  • Upsetting
  • Punching
  • Drawing

What property of a light wave is determined by its wavelength?

  • Color
  • Shape
  • Size
  • Density

A forming operation which results in the greatest dimensional accuracy is:

  • Cold rolling of sheet
  • Hot rolling of sheet
  • Cold rolling of bars
  • Forging

Grain boundaries are areas of a metal microstructure:

  • Where high melting point constitutes are concentrated
  • Made up of rows of atoms arrayed in straight lines
  • That are not attacked by etchants and generally stand in relief during metallographic examination
  • Where low melting impurities tend to cencentrate

Project quality management involves all of the following processes except:

  • Quality planning
  • Quality assurance
  • Quality control
  • Quality feature

_______ is the ratio of the volume of water to the total volume of void space.

  • Void ratio
  • Porosity
  • Degree of Saturation

What is considered as the general purpose, oldest type and widely used cast iron?

  • Silver
  • Gray iron
  • Iron
  • Silicon magnesium

In forgings, grain:

  • Follows the shape of the dies
  • Becomes coarser
  • Retains its original shape
  • Its lateral to the shape of the dies

What do you add to compensate for the remaining high iron-oxide content of the steel?

  • Deoxidizers
  • Oxidizers
  • Oxiders
  • Oxide

A weld discontinuity that always occurs at the root of a weld is:

  • Lack of fusion
  • Slag inclusions
  • Lack of penetration
  • Undercut

Which is NOT a intensive property of thermodynamics?

  • Temperature
  • Pressure
  • Mass
  • Density

What refers to the claim of anyone to ownership?

  • Proprietorship
  • Assets
  • Equity
  • Liability

When thick and thin casting sections are adjacent to each other, what discontinuity may result?

  • Porosity
  • Inclusions
  • Shrinkage
  • Core shift

The factor which must be considered prior to selecting the best method to produce a closed die forging is:

  • The size of the forging
  • The production quantity
  • The design of the forging
  • All of the above

The principles of kinetic particles are derived from which law?

  • Newton's first law
  • Newton's second law
  • Newton's third law
  • D'Alembert principle

What is the unit of luminous efficiency?

  • Lumen/watt
  • Lumen/volt
  • Lumen/ampere
  • Lumen/coulomb

A generally smooth indication on a cast surface resulting from the meeting of two streams of metal coming from different directions and failing to fuse is called:

  • A stringer
  • A hot tear
  • A cold shut
  • A lap

What is the generic name of a class of polymer which is commercially known as nylon?

  • Polyamide
  • Polymers
  • Copolymer
  • Polygon

An advantage of electroslag welding over other methods of welding is that:

  • A coarse grain structure is formed because of the slow cooling rate
  • It does not require special edge preparation on the base metal sections
  • Weld cracking is never a problem because of the absence of residual stress
  • Very thin sections can be welded easily

In the shielded metal-arc process, the covering material:

  • Protects the metal from picking-up nitrogen during melting and transfer across the arc
  • Serves as alloying elements to the weld
  • Protects the metal from oxidation during melting
  • All of the above

Grinding cracks are usually caused by:

  • Heat treatment
  • Grinding soft metal surfaces
  • Grinding hard metal surfaces
  • Too slow feeding rates

One of the main causes of cold shuts is:

  • Improper preheating of molds
  • The presence of several sprues or gates in the mold
  • Pouring without a filter
  • The alloy selection

In spot resistance welding, pressure used may be:

  • Mechanical
  • Pneumatic
  • Hydraulic
  • Any of the above

What is the ratio of force to elongation?

  • Force
  • Elongation
  • Force elongation
  • Force constant

The general law of mechanics that stress is directly proportional to strain

  • Hooke’s law
  • Boyle’s law
  • Shearing stress
  • Elasticity

What is defined as the force per unit area?

  • Pressure
  • Energy
  • Work
  • Power

Which of these elements deals with the geometry of motion?

  • Kinematics
  • Statics
  • Dynamics
  • Kinetics

A definite break in the material caused by excessive working of the metal during the forging, rolling or extruding operation is called a:

  • Cold shut
  • Seam
  • Burst
  • Hot tear

Patterns made of wood:

  • Are always made in one piece
  • Are always made in two pieces, one for the cope and the other for the drag portion of the flask
  • Are made in one, two, or more pieces depending on the complexity of the casting
  • Never includes the gates and risers if they are made in one piece

Non-metallic inclusions are not present before the billet is worked:

  • True
  • False

Cracks or fractures formed in a casting prior to completion of solidification because of restricted contracting is indicative of a:

  • Shrinkage cavity
  • Hot tear
  • Misrun
  • Cold shut

Which is the type of annuity where payments are made at the end of each period starting from the first period?

  • Ordinary annuity
  • Perpetuity
  • Annuity due
  • Deferred annuity

Which of the following generally requires the most extensive technique development for NDT?

  • A rolled product
  • A forged product
  • An extruded product
  • All of the above usually require about the same degree of NDT technique development prior to inspection

The electrodes used for spot welding are usually made of:

  • Carbon
  • Mild Steel
  • Tungsten
  • Copper

Degree of Saturation (%):

  • Sr=VvVT⋅100S_r=frac{V_v}{V_T}cdot100Sr​=VT​Vv​​⋅100
  • Sr = VwVs⋅100S_r = frac{V_w}{V_s}cdot100Sr​ = Vs​Vw​​⋅100
  • Sr=VwVT⋅100S_r=frac{V_w}{V_T}cdot100Sr​=VT​Vw​​⋅100

The method of applying mechanics that assumes all objects are continuous is called __________.

  • Mechanics
  • Continuum
  • Directional mechanics
  • Continuum mechanics

Which of the following is lowest resistance grounding on earth?

  • Sand
  • Clay
  • Surface loam soil
  • Limestone

How much percent of the mass is comprised by oxygen in the earth's crust?

  • 50.5
  • 49.5
  • 48.5
  • 47.5

The grain size of ferrous metal is commonly refined by:

  • Elastic deformation
  • Heat treatment
  • High frequency mechanical vibrations
  • Both A and B

Submerged arc welding may be performed:

  • In the flat position
  • In the flat and horizontal positions
  • In the vertical position
  • All of the above

Patterns used to prepare molds for casting are made of:

  • Wood
  • Aluminum alloy
  • Epoxy resin
  • Any of the above

All metals solidify in a ___________ structure.

  • Crystalline
  • Amorphous
  • Molecular
  • Compounded

The overall stress to give failure by fatigue is:

  • Greater than that required to produce tensile failure
  • Less than that required to produce tensile failure
  • Equal to that required to produce tensile failure
  • Greater or less than that required to produce tensile failure depending on the type of material

Which term is used to denote a family of thermosetting polymers that are reaction products of alcohols and acids?

  • Alkaline
  • Alkalydes
  • Alcolids
  • Aldehyde

Heat exchanger tubes are defect prone at regions:

  • Adjacent to support plates
  • Under support plates
  • In-between support plates
  • All of the above

The dimensionless parameter describing deformation

  • Stress
  • Strain
  • Shearing stress
  • Elasticity

Oxides in weldments can cause discontinuities which are similar to non-metallic inclusions. But these oxide-caused discontinuities are called:

  • Crater cracks
  • Seams
  • Slag inclusions
  • Lack of root penetration

The essential difference between permanent mold casting and die casting is:

  • In the first method, molten metal enters the mold by gravity, while in the second method, the molten metal enters the mold under pressure.
  • The mold in the permanent mold casting is reusable while it is not in the case of the die casting.
  • The mold in permanent mold casting is made of ceramic while steel is used to make the mold for die casting.
  • There are no differences. Both names are used to identify the same process.

Inserts which may be found in sand molds are:

  • Chills
  • Chaplets
  • Cores
  • All of the above

A difference between shielded metal-arc welding and gas metal-arc welding is that, in gas metal-arc welding:

  • The electrode is consumable
  • The shielding gas is contained in the flux covering the electrode
  • A stream of protective gas is passed through an inverted cup or a nozzle which surrounds the electrode
  • A slag coating is formed to protect the weld as it cools

What is the action exerted by one body upon another called?

  • Energy
  • Pressure
  • Force

The fuel gas most commonly used in gas welding is:

  • Butane
  • Propane
  • Acetylene
  • All of the above

Most manufacturing defects in a tube are:

  • Axial in direction
  • Circumferential in direction
  • On the outside of the tube
  • Subsurface

32. When all atom molecule are the same, the substance is called?

  • mixture
  • compound
  • Substance
  • Halogens

A 250V light source has a mean spherical luminous intensity of 87.5 candelas. Compute the luminous intensity of the Lamp.

  • 4.7 lm/s
  • 4.4 lm/s
  • 2.0 lm/s
  • 1.7 lm/s

What acid id used in glass itching?

  • Acetylsalicylic acid
  • Hydrofluoric acid
  • Phosphoric acid
  • Hydrochloric acid

In a mold, the sprue connects:

  • The runner to the mold cavity
  • The downgate to the riser
  • The downgate to the ingate
  • The pouring basin to the runner

The way of providing metal ductility between two cold working operations is:

  • By heating up the metal below its recrystallization temperature
  • By quenching the metal
  • By heating up the metal above its recrystallization temperature
  • By stress relieving the metal

A substance that has a fixed chemical composition isknown as _______ substance.

  • Monoatomic
  • Heterogeneous
  • Homogeneous
  • Pure

Hot tears in a casting may be the result of:

  • Interrupted or too slow metal pouring
  • Excessive gas in the metal poured
  • Insufficient metal poured
  • Improper use of chills

Usually, the most serious type of flaw in metals is/are:

  • Porosity
  • Cracks
  • Inclusions
  • Laminations

Which statement of the second law of thermodynamics states that no heat engine can have a thermal efficiency of 100 percent?

  • Kelvin-Planck statement
  • Clausius statement
  • Kelvin statement
  • Rankine statement

Cold working steel or aluminum results in a decrease in:

  • Ductility
  • Hardness
  • Strength
  • All of the above

Wrought products invariably exhibit:

  • High susceptibility to corrosion
  • Lower strength than their cast counterparts
  • Directional properties
  • Poor weldability

Strain hardening occurs whenever a metal is:

  • Deformed at a temperature below the recrystallization point
  • Deformed at a temperature above the recrystallization point
  • Heat treated
  • Both a and c

Which of the following is an inherent discontinuity?

  • Lamination
  • Heat-treat crack
  • Fatigue crack
  • Lap

Bursts are caused by:

  • Working at too low or too high a temperature
  • Excessive grinding
  • The presence of hydrogen in the metal
  • Localized heat-affected zones

What refers to the amount of a product made available for sale?

  • Supply
  • Demand
  • Product
  • Good

A joining process which occurs without fusion of the base metal is:

  • Arc welding
  • Brazing
  • Spot welding
  • Gas welding

Which of the following is present in ingots?

  • Stringers
  • Porosity
  • Laminations
  • Seams

What is the ratio of stress to strain?

  • Elastic Modulus of the material
  • Elastic strength of the material
  • Ultimate strength of the material
  • Yield stress of the material

Which device is used for measuring the velocity of a bullet?

  • Pendulum
  • Oscillating pendulum
  • Ballistic pendulum
  • Rotating pendulum

A green sand mold is:

  • A sand mold coated with a "green" wash
  • A sand mold mixture made up of sand, clay and water
  • A sand mold not yet ready for casting
  • A sand mold used in the production of cores only

Polishing is a surface finishing operation which results in:

  • The removal of metal
  • Plastic working of the surface
  • The deposition of a protective layer to prevent corrosion
  • Both a and b

The submerged mass of soil per unit volume.

  • Submerged unit weight
  • Submerged weight
  • Submerged density

It is usually difficult to machine a smooth surface on a material when:

  • It has been cold worked
  • It has high strain hardening ability
  • It has low strain hardening ability
  • Both a and b

The millworking process used most to form metals into 3D shapes is:

  • Casting
  • Cold rolling
  • Welding
  • Forging

What is the change in cost per unit variable change called?

  • Variable cost
  • Incremental cost
  • Fixed cost
  • Supplemental cost

A dark narrow line running down the center of the weld is:

  • Undercut
  • Incomplete penetration
  • Porosity
  • Segregation

A process in which multiple electrodes are most commonly used in various arrangements to deposit metal more rapidly is:

  • Shielded metal-arc welding
  • Gas tungsten-arc welding
  • Gas metal-arc welding
  • Submerged arc welding

When a consultant or specialist gives advice to his superior, he is using what type of authority?

  • Top authority
  • Line authority
  • Staff authority
  • Functional authority

When metals solidify:

  • Atoms become more mobile thus allowing them to migrate to definite positions within a crystal
  • Atoms lose mobility and assume fixed positions in the space lattice of the unit cell
  • A curie point is reached where crystals begin to grow
  • A curie point is reached where grain boundaries begin to form

Who proposed pH scale in 1909?

  • Albert Einstein
  • J. Willard Gibbs
  • Henri Hess
  • Soren Sorensen

NDT is a method of locating which of the following:

  • Discontinuations
  • Dislocations
  • Discontinuities
  • Disturbances

What is another term for "Alkanes"?

  • Olefins
  • Acetylene
  • Paraffins
  • Methyl

is a scientific field of the civil engineering discipline that studies the mechanical behavior of soil.

  • Soil Mechanics

The term brass is used to designate an alloy containing

  • Copper and boron
  • Copper and tin
  • Copper and bronze
  • Copper and zinc

The machining process which can produce the best surface finish is:

  • Turning
  • Planing
  • Grinding
  • Milling

A steel cannot qualify for stainless prefix until it has at least how many percent of Chromium?

  • 10%
  • 3%
  • 12%
  • 15%

How many dynes in one newton?

  • 10,000
  • 100,000
  • 1,000,000
  • 1,000

Which of the following welding processes does not involve melting of the parts to be joined?

  • Arc welding
  • Gas welding
  • Pressure welding
  • Electron beam welding

Non-metallic materials trapped in solid metal are described as:

  • Porosity
  • Inclusions
  • Seams
  • Laminatinos

The principal purpose of risers in molds is to:

  • Feed the castings
  • Let air escape from the mold
  • Ensure impurities will remain outside the casting
  • Favor directional solidification

A method commonly used to remove a number of flaws in an ingot prior to forming is:

  • Cropping
  • Heat treating
  • Welding
  • Sand blasting

If atomic masses of Al and O are 26.98 amu and 16.00 amu respectively, how many grams of Al are there in 431g of Al2O3?

  • 228 g
  • 215 g
  • 237 g
  • 114 g

The pressure at which a substance is capable of supporting without fracturing is called ___________.

  • Ultimate strength
  • Allowable strength
  • Modulus of elasticity
  • Yield stress

e = VvVsfrac{V_v}{V_s}Vs​Vv​​ is a formula for:

  • Void ratio
  • Porosity
  • Degree of Saturation

Which of the following factors can have a negative influence on some non-destructive tests?

  • Grain size
  • Grain orientation
  • Grain boundary composition
  • All of the above

What temperature scale is identical to Kelvin scale?

  • Ideal gas temperature scale
  • Ideal temperature scale
  • Absolute gas temperature scale
  • Triple point temperature scale

Cold shuts are most likely to be found in:

  • Extrusions
  • Forgings
  • Castings
  • Sintered parts

The hardest structure that can be produced by heat treating steel is:

  • Pearlite
  • Austenite
  • Cementite
  • Martensite

Resistance welding differs from fusion welding in that:

  • The use of pressure is indispensable
  • Smaller amounts of filler metal is used
  • Bonding occurs at room temperature
  • There is no fusion of the parent material

A type of defect which propagates along grain boundaries is called:

  • A fatigue crack
  • A transgranular crack
  • A borderline crack
  • A hot tear

What is ASTM test for shear strength is designated for plastics?

  • E324
  • D732
  • H967

Grain direction in steel bar stock is always:

  • Through the length of the bar
  • Through the width of the bar
  • Spread out in all directions
  • A bar of steel has no grain direction

Increasing test sample temperature normally:

  • Increases electrical resistivity
  • Decreases electrical resistivity
  • Does not change electrical resistivity
  • Increases magnetic permeability

Blowholes occur beneath the surface of a casting:

  • True
  • False

In which of the following welding processes is filler metal never added?

  • Brazing
  • Soldering
  • Arc welding
  • Spot welding

The factor which must be considered prior to selecting the hammer or press to produce a closed-die forging is:

  • The size of the forging
  • The production quantity
  • The design of the forging
  • All of the above

______ shows the process of how fluids react to forces.

  • Continuum mechanics
  • Directional mechanics
  • Fluid mechanics
  • Static mechanics

What type of grain structure would normally be found at the center of a heavy walled casting?

  • Fine equiaxed grains of a random orientation and shape
  • Columnar grains with a dendritic structure
  • Large equiaxed grains with superior metallurgical characteristics
  • None of the above are correct

Better mechanical properties are obtained with:

  • A fine grain structure
  • A large grain structure

A magnetic material may be demagnetized by:

  • Heating to above the curie temperature
  • Cold working
  • Passing the material through an AC coil
  • All of the above

What unit expresses the amount of radiation actually absorbed in the tissue?

  • Rad
  • Rbe
  • Rem
  • Reb

Which of the following metals is least suitable to be cold worked?

  • Iron
  • Zinc
  • Low carbon steel
  • Nickel

Pressure welding can be accomplished with pressure alone, but what else is usually added?

  • Heat
  • Filler material
  • Oxides
  • Adhesives

As cold working progresses, the energy required for further processing (assuming the temperature of the part is held constant)

  • Increases
  • Decreases
  • Remains constant
  • Any one of the above may be true depending on the material

What type of bonding in which electrostatic attraction is predominant?

  • Covalent bonding
  • Ionic bonding
  • Chemical bonding
  • Unipolar bonding

A disadvantage of dry sand molds when compared to green sand molds is:

  • Erosion of the mold is more common
  • Castings are more susceptible to hot tears
  • A surface finish is generally worse.
  • Overall dimensional accuracy is worse

An extremely thin discontinuity that is the result of pipes, or inclusions flattened and made directional by working is called:

  • A stringer
  • A lamination
  • A seam
  • A cold shut

Which of these deals with the forces required to produced motion ______________.

  • Static
  • Potential
  • Kinetics
  • Dynamic

A slag inclusion in a weld is normally found in a weld crater.

  • True
  • False

What is the chief ore of titanium?

  • Glamite
  • Llmanite
  • Tiate
  • Sphalite

What is the prime time block for FM radio in Metro Manila?

  • 7:00 AM to 7 PM
  • 6:00 AM to 6 PM
  • 6:00 AM to 8 PM
  • 7:00 AM to 8 PM

Porosity is sometimes found in plate or sheet metal and is given the name:

  • Stringers
  • Seams
  • Bursts
  • Laminations

This is the ratio of the volume of voids to the total volume of the soil.

  • Void ratio
  • Porosity
  • Degree of Saturation

Level II magnetic particle technicians should always be able to evaluate if an indiction is relevant, false or nonrelevant, and if it is rounded or linear.

  • True
  • False

Which of the following properties is controlled by the electrons in the atom?

  • The electrical conductivity
  • The density
  • The tensile strength
  • The ductility

Lack of penetration may be the result of:

  • Too slow a welding rate
  • Too large a welding rod
  • Too high a welding current
  • Improper use of chills

How are elements numbered 58 to 71 in the periodic table called?

  • Magnets
  • Lanthanons
  • Halogens
  • Metals

In which of the following joining methods will flaws, when they do occur, be essentially two dimensional?

  • Gas tungsten arc welding
  • Gas metal arc welding
  • Submerged arc welding
  • Brazing

What does the symbol "pH" stands for?

  • The power of hydroxide compound
  • The power of hydroxide ion
  • The power of hydrogen ion
  • The power of hydrogen

A burst is a processing defect that may be caused by:

  • The dies not being set-up properly in the hammer or press
  • Excessive working of the metal during the forging or extruding operation
  • Localized stresses set up by unequal heavier masses of metal
  • Thin sections adjoining heavier masses of metal

A common discontinuity in a weld or casting that is difficult to detect by magnetic particle testing is:

  • A crack
  • Porosity
  • Shrinkage
  • Lamination

The low-temperature reservoir of the heat reservoirs is known as ____.

  • Source reservoir
  • Heel reservoir
  • Toe reservoir
  • Sink reservoir

The work metal for working with a forging hammer is:

  • A bloom
  • A billet
  • A bar
  • Any of the above

What is concurrent force system?

  • All forces act at the same point
  • All forces have the same line of action
  • All forces are parallel with one another
  • All forces are all in the same place

A metal insert imbedded in the surface of a sand mold to increase the cooling rate at the point is called:

  • A chill
  • A heat sink
  • A chaplet
  • A core

What is a substance that attracts a piece of iron?

  • Core
  • Magnet
  • Iron
  • Cladding

A cause of gas porosity in welds is:

  • Welding at too low a temperature
  • Improper cleaning or preheating of the plates to be welded
  • The use of insufficient filler metal
  • Restriction of movement of the metal during heating or welding

Aircraft turbine blades are usually processed by:

  • Investment casting
  • Shell mold casting
  • Green sand casting
  • Dry sand casting

A riser in the mold is there to:

  • Feed the casting as the metal shrinks before and during solidification
  • Let air escape from the mold
  • Ensure that impurities will segregate outside of the casting
  • All of the above

Quantities which posses magnitude are called _____________.

  • Vector quantities
  • Magnitude
  • Direction
  • Scalar quantities

Which of these is assumed to be the sum of the linear momentum of its particles?

  • Linear momentum of a body
  • Dynamic momentum of a body
  • Static momentum of a body
  • Momentum of a body

In the resistance welding process:

  • Two parts to be joined are heated then pressure is applied.
  • The pieces to be joined are held firmly together under pressure, followed by the generation of heat at the interface.
  • No heat is applied and the parts are welded by applying pressure only.
  • The parts are heated but not melted and a filler metal is added.

The tension in the cable is the same on both sides of the pulley

  • Gravity
  • Frictionless pulley
  • Pulley
  • Friction

What do you call tin mill steel without a coating?

  • Solid plate
  • Cladding
  • Coating
  • Black plate

Inherent discontinuities are:

  • Discontinuities that exist inside the material below the surface.
  • Just a property of the alloy of metal.
  • All removed by cropping.
  • Formed when molten metal solidifies.

A process during which entropy remains constant is called _____ process.

  • Isometric
  • Isochoric
  • Isobaric
  • Isentropic

A service defect that appears as a series of small micro-openings with no definite pattern and extend in any direction following the grain boundaries is:

  • A fatigue crack
  • A fillet crack
  • Hydrogen embrittlement
  • Intergranular corrosion

The internal bores of fastener holes on aircraft are an important source of cracking caused by:

  • Fatigue
  • Stress corrosion
  • Overloading
  • Both a and b

Hot working an ingot may produce a product which has:

  • Fewer defects than in the original ingot
  • More defects than the original ingot
  • The same number of defects as in the original ingot
  • Any of the above may be correct depending on the circumstances.

Results when a body is acted upon by the force are called _______________.

  • Formation
  • Deformation
  • Excitation
  • Reformation

A long defect, parallel to the longitudinal axis of a bar and caused by blowholes, cracks or tears introduced in earlier processing and elongated in the direction of rolling or forging is called:

  • A seam
  • A forging lap
  • A lamination
  • A cold shut

A forging lap might occur:

  • Where grain direction makes an abrupt change
  • In the center of a forging
  • At the junction of light and heavy section
  • At the junction of the sprue and the ingate

The most easily forgeable material, from the following, is:

  • High strength nickel based alloy
  • Stainless steel
  • Carbon steel
  • High strength aluminum alloy (7075)

What is the chief ore of tin?

  • Cassiterite
  • Ferrite
  • Traite
  • Glurrite

Which of the following discontinuities is not normally associated with a casting?

  • Segregation
  • Core shift
  • Misrun
  • Bursts

If a weld is manufactured and the parent metal is restrained, a crack might occur due to stress. It would usually occur:

  • In the direction of the weld
  • Transverse to the direction of the weld
  • Only in the parent metal
  • Only in the weld cap, and longitudinally with the weld

What is the combination of cutting and scratch test of a material called?

  • Knoop test
  • Vickers test
  • File hardness test
  • Toughness test

3 components or phases of soil

  • solids, water, air

Who discovered the Hooke's law?

  • Heidrich Frederick
  • Charles Babbage
  • Charles Smith
  • Robert Hooke

A steel casting suitable for working or remelting is called:

  • A bloom
  • A billet
  • An ingot
  • A slab

Forging laps can occur in which of the following places:

  • The top part of the die
  • Where the dies come together
  • The bottom of the die
  • None of the above

A P 1,000,000 issue of 3%, 15-year bond was sold at 95%. What is the rate of interest of this investment?

  • 3.0%
  • 3.4%
  • 3.7%
  • 4.0%

Porosity formula:

  • ηetaη = VVVTfrac{V_V}{V_T}VT​VV​​
  • η = VVVSeta = frac{V_V}{V_S}η = VS​VV​​
  • η = VwVTeta = frac{V_w}{V_T}η = VT​Vw​​

The first step in the production of a casting is the making of:

  • A mold
  • A pattern
  • A core
  • A cavity

______________ refers to the state just before surfaces start to slip.

  • Kinetic motion
  • Dynamic motion
  • Static motion
  • Pending motion

The middle portion of a molding flask is called a:

  • Cope
  • Drag
  • Cheek
  • Separator

If a weldment has a crater crack, you might find it:

  • At the beginning of the weld
  • At the end of the weld
  • Somewhere in between the beginning and the end of the weld
  • At any one of the above places

A metal stressed below its elastic limit will return to its original shape:

  • Upon heating the metal to its curie point
  • Only upon application of an equivalent stress in the opposite direction
  • Upon removal of the stress
  • All of the above

Discontinuities are:

  • Always defects and usually rejected.
  • Either acceptable or rejected.
  • Either relevant or nonrelevant.
  • Discontinuities that cause the test object to fail.

An example of a processing discontinuity that is the result of an inherent discontinuity changing shape during rolling is a:

  • Cooling crack.
  • Burst
  • Lap
  • Lamination

Possible effect(s) of metal forming is (are) to:

  • Refine the grain structure
  • Improve the mechanical properties
  • Close blow holes which have formed in an ingot
  • All of the above

What is ASTM test for tension is designated for standard methods of steel products?

  • F456
  • A370
  • J564
  • J789

Which of the following is identified as a casting insert?

  • Chaplet
  • Mold
  • Gate
  • Riser

An EDM notch formed in 304 stainless steel may cause:

  • A local increase in permeability
  • The formation of austenite around the notch
  • An increase in conductivity
  • All of the above

It is a pictorial representation in solving a system.

  • Analytical
  • Polygon
  • Graphical
  • Mathematical

A lamination is something which might be found in:

  • Bar stock
  • Pipe
  • Forgings
  • Sheet or plate material

A dark linear indication appearing at the edge of a weld is probably:

  • Incomplete penetration
  • Slugging
  • Porosity
  • Undercut

Prior to forging, steel is usually heated to:

  • Slightly above the curie temperature
  • Slightly above the melting temperature
  • Slightly below the melting temperature
  • Slightly below the first transformation temperature

What is another term for Tempering?

  • Drawing toughening skidding Drawing or toughening
  • Toughening
  • Skidding
  • Drawing or toughening

The property of a material to exist under different lattice structures at different temperatures is:

  • Ductility
  • Allotropy
  • Crystallinity
  • Hardenability

Micro shrinkage might occur in a casting:

  • At the header
  • At junctions between light and heavy sections
  • The castings surface
  • In the heavy part of the casting

Sublimation is direct change from

  • Liquid to gas phase
  • Solid to gaseous phase
  • Gas to liquid phase
  • Liquid to solid phase

Under R.A. 9292, the standard on minimum compensation is based on ______.

  • Current practice
  • Current consumer price index
  • Minimum basic daily wage
  • All of the above

A common characteristic of sand casting and investment casting is:

  • Both may be used to produce small castings
  • Both produce castings of great dimensional accuracy
  • Both make use of wooden patterns
  • Both make use of re-usable molds

The tort law is concerned with _____.

  • Imprisonment
  • Fine
  • Compensation for the injury
  • Punishment

The term bronze is used to designate any alloy containing

  • Copper and boron
  • Copper and tin
  • Copper and bronze
  • Copper and manganese

What is the ratio of stress to strain in a material loaded within its elastic range?

  • Ultimate strength
  • Allowable strength
  • Modulus of elasticity
  • Yield strength

In a mold, the runner connects:

  • The pouring basin to the sprue
  • The downgate to the riser
  • The sprue to the ingate
  • The pouring basin to the mold cavity

Amorphous materials include:

  • Copper
  • Steel
  • Aluminum
  • None of the above

If there are many sellers and few buyers, the market situation is called ___________.

  • Duopsony
  • Oligopoly
  • Oligopsony
  • Monopoly

Which of the following measurements indicates the smoothest surface finish?

  • 250 microinches
  • 0.0002 inches
  • 0.00015
  • 100 microinches

The top portion of a molding flask is called a:

  • Cope
  • Drag
  • Cheek
  • Separator

Grinding cracks can be caused by:

  • Lack of, or poor coolant
  • Dull, or improper grinding wheel
  • A too heavy cut
  • All of the above

The material used for making a pattern depends on:

  • The type of material that will be cast
  • The grain structure desired in the finished casting
  • The expected production quantity
  • All of the above

During on-line (Manufacturing) inspection of components, defective areas are often automatically marked to:

  • Allow removal of defects after the inspection, if desired
  • Allow destructive examination of defective areas after the inspection, if desired
  • Pass rejectable material after the inspection, if desired
  • Both a and b

What are considered as the building blocks for engineering materials?

  • Atom
  • Molecule
  • Nucleon
  • Proton

When a crack-like space is caused by molten metal covering solidified metal, the result is:

  • A cold shut
  • A lap
  • A burst
  • A lamination

Materials of low ductility are best forged with:

  • Gravity drop hammers
  • Power drop hammers
  • High energy rate forging hammers
  • Hydraulic presses

A forging defect caused by the metal being folded over and forced into the surface but not welded to form a single piece is called:

  • A hot tear
  • A forging lap
  • A burst
  • A forging crack

A casting process in which the pattern is not re-usable is called:

  • Shell mold casting
  • Investment casting
  • Sand casting
  • Composite mold casting

A rupture in the material that can be in any direction on the part and is caused by localized stresses that exceed the tensile strength of the material is:

  • A fatigue crack
  • A heat treat crack
  • A seam
  • A stringer

Which of the items listed below is a discontinuity found in ingots?

  • Laminations
  • Bursts
  • Non-metallic inclusions
  • Lack of fusion

What phenomenon(s) may happen in the heat affected zone during the process of fusion welding?

  • Grain growth
  • Change of structure
  • Recrystallization
  • All of the above

By departmentalization of an organization, it decentralizes __________.

  • Authority
  • Responsibility
  • Accountability
  • All of the above

Efficiency of a machine is the ratio of:

  • Power output to power input
  • Power input to power output
  • Total work done to total energy
  • Total energy to total power

What term is used to describe a polymer that has a rubber like properties?

  • Elastomer
  • Plastics
  • Copolymers
  • Polymers

A metal production process which eliminates the need for ingot cropping is:

  • Continuous hot rolling
  • Super hot rolling
  • Super hot extrusion
  • Continuous casting

A material which is considered ferromagnetic is:

  • Nickel
  • Cobalt
  • Iron
  • All of the above

what is the opposite of alkali?

  • Acid
  • Fluid
  • Carbon
  • Oxide

Fine lines, likely to occur in groups caused by non-metallic impurities present in the original ingot and extruded lengthwise are called:

  • Stringers
  • Seams
  • Laminations
  • Laps

What type of steel has 0.8% carbon and 100% pearlite?

  • Eutectoid
  • Deutectoid
  • Nuclei
  • Duetoic

When several forces act in a given situation it is called _______________.

  • Collinear of forces
  • System of forces
  • Line of forces
  • Linear forces

What is most abundant metal in nature?

  • Copper
  • Manganese
  • Aluminum
  • Iron

With a forging hammer the striking force is imposed on the work metal by:

  • The lower die only
  • The upper die only
  • Both dies moving in opposite directions
  • Both B and C

The folding of a metal in a thin plate on the surface of a forging causes:

  • A cold shut
  • Unhealed porosity
  • A lap
  • A burst

This refers to the soil solids. It is otherwise called as dry unit weight of soil, and calculated using, ρd = MsVTrho_d = frac{M_s}{V_T}ρd​ = VT​Ms​​

  • Unit weight
  • Dry unit weight
  • Dry density

What materials have permeabilities slighter greater than that of free space?

  • Paramagnetic materials
  • Ferromagnetic materials
  • Diamagnetic materials
  • Magnetic materials

A cold shut has:

  • A smooth, curved appearance
  • A ragged shape
  • A straight thin line
  • An undulating shape

In its original shape, porosity would appear:

  • Elongated
  • Irregular
  • Round or nearly round
  • Square

Which of the following statements is correct?

  • The hardness of the dies for open-die forging is generally higher than the hardness of impression dies for closed-die forging
  • The hardness of dies for open-die forging is generally lower than the hardness of impression dies for closed-die forging
  • The life of dies for open-die forging is less than that of impression dies for closed-die forging
  • Both B and C are true

Refers to the mass of solids in the soil compared to the mass of water at the same volume.

  • Specific weight
  • Specific volume
  • Specific gravity

Metal forming such as rolling, results in:

  • Plastic flow of the metal
  • Elongation of existing defects perpendicular to the rolling direction
  • Directional properties which is always beneficial for secondary forming operations.
  • The flattening out of defects which makes them more easily detectable by most NDT methods

What is the physical apperance of sodium?

  • Silver metal
  • Yellowish gas
  • White crystal
  • Reddish gas

What is formed when acids react with active metals?

  • Helium
  • Hydrogen
  • Lithium
  • Halogen

Non-metallic inclusions are:

  • Round in shape
  • Rectangular in shape
  • Irregular in shape
  • Tall

The process in which a mold is formed from a mixture of sand and a thermosetting resin binder that is placed against a heated metal pattern is called:

  • Dry sand molding
  • Permanent mold casting
  • Investment casting
  • Shell molding

As cold working progresses, the energy required for further processing (assuming the temperature of the part is held constant):

  • Increases
  • Decreases
  • Remains constant
  • Any one of the above may be true depending on the material

What is the real or imaginary surface that seferates the system from the surroundings?

  • Division
  • Wall
  • Boundary
  • Interface

The use of acids to remove oxides and scale on hot-worked steels is known as

  • Pulling
  • pushinh
  • picking
  • Adding

Usually, seamless tubing is produced by:

  • Extrusion
  • A welding process which requires filler metal
  • Resistance welding
  • Seamless welding

What do we call fluids at rest?

  • Electro pneumatics
  • Hydraulics
  • Pneumatics
  • Hydrostatics

What is a non-metallic inclusion called in bar stock?

  • Lamination
  • Burst
  • Lap
  • Stringer

What refers to a shape achieved by allowing a liquid to solidify in a mold?.

  • Casting
  • Scalding
  • Scolding
  • Fading

Galvanized steel are steel product coated with

  • Zinc
  • Iron
  • Silicon
  • Boron

Like ingots, welds can contain porosity:

  • True
  • False

What is the force of attraction on a body?

  • Weight
  • Density
  • Mass
  • Number

The thermodynamic properties that are independent of the size of the system are called ____________.

  • Extensive property
  • Intensive property
  • Open property
  • Close property

A piano string with a length of 1.17m and a mass of 21.0g in under tension of 6.4 x 103 N, what is the fundamental frequency?

  • 225 Hz
  • 187 Hz
  • 255 Hz
  • 290 Hz

The length of time required for recrystallization is:

  • Proportional to the temperature and inversely proportional to the amount of deformation (strain) present
  • Proportional to the temperature and the amount of deformation present
  • Inversely proportional to the temperature and the amount of deformation present
  • Inversely proportional to the temperature and directly proportional to the amount of deformation present

Laminations are produced:

  • When forging with faulty dies
  • When excess metal is folded over during a rolling operation
  • When a pipe or blisters present in the original ingot are made directional by rolling
  • When blowholes introduced in earlier processing are elongated, by extruding, in the direction of working

The Curie point is:

  • The temperature at which the steel structure changes from B.C.C. to F.C.C.
  • The temperature above which the steel is no longer magnetic
  • The temperature at which the metal must be heated between two cold working operations
  • The melting point of the material

What is the emissivity of a black body?

  • 0
  • 1
  • 0.5
  • 0.25

Machinability and fatigue resistance are improved in metals that have been:

  • Hot worked
  • Cold worked
  • Heat treated
  • Cast

Which of the following can be classified as processing defects:

  • Laminations
  • Grinding cracks
  • Fatigue cracks
  • Cold shuts

Grinding cracks in metal are always:

  • Parallel to the grinding wheel rotation
  • Subsurface
  • Open to the surface
  • Inherent discontinuities

A non-consumable electrode used for arc welding would be made of:

  • Tungsten
  • Steel
  • Copper
  • Titanium

In the typical functinal organization hierarchy, the chief engineer is under the _____.

  • Finance manager
  • Manufacturing manager
  • General manager
  • Marketing manager

A hot tear in a casting is a crack. It could occur:

  • Within the heavy part of the casting
  • In the light section of the casting
  • At junctions of light and heavy castings
  • At the header

It is the intensity of the force.

  • Vector quantities
  • Magnitude
  • Direction
  • Scalar quantities

The strain produced by a hydrostatic pressure is called ____________.

  • Strain
  • Stress
  • Volume strain
  • Volume

How much pH content of an acid?

  • Between 0 to 7
  • Between3 to 7
  • Between5 to 7
  • Between1 to 7

What is the mixing of gases due to molecular motion called?

  • Diffusion
  • Effusion
  • Fusion
  • Fission

A welding defect that occurs at the root and runs parallel with the weld is:

  • Lack of fusion between beads
  • Icicle
  • A crater crack
  • Lack of penetration

A forging lap may occur if:

  • Faulty dies are used for forging
  • The metal is either too hot or too cold during the forging operation
  • The metal is forced to flow too fast
  • All of the above.

What is the ratio of the elongation to force?

  • Compliance of the spring
  • Compliance of the core
  • Compliance of the wire
  • Compliance of the material

What remains constant during a steady-flow process?

  • Mass
  • Energy content of the control volume
  • Temperature
  • Mass and energy content of the control volume

In the submerged arc welding process:

  • Flux is supplied by the electrode covering
  • Flux is added separately and heaped along the joint to be welded
  • A liquid flux is applied
  • No flux is needed

Hydrogen will cause porosity if present during heat treating or welding.

  • True
  • False

What is the unit of work?

  • Newton meter per second
  • Newton meter
  • Newton meter squared
  • One Newton meter or one Joule

It is the attraction between like molecules

  • Adhesion
  • Cohesion
  • Reduction
  • Conduction

The bottom portion of a molding flask is called a:

  • Cope
  • Drag
  • Cheek
  • Separator

Elements may be added to the filler metal to:

  • Control grain growth
  • Increases ductility
  • Assure adequate corrosion resistance
  • Any of the above

In gas welding, a reducing flame is produced when:

  • There is no excess oxygen or acetylene in the flame
  • There is excess acetylene in the flame
  • There is excess oxygen in the flame
  • There is excess oxygen and acetylene in the flame

A crater crack may occur when:

  • The welder fails to fill the crater before breaking the arc
  • The root face of the joint does not reach fusion temperature before weld metal is deposited
  • Cleaning or preheating of the plates is improperly done before welding
  • Excessive current and excessive welding speed are used

A discontinuity can be caused within a casting as it solidifies. It would be called:

  • A shrinkage cavity
  • A blowhole
  • An inclusion
  • A cold shut

Premature blocking of a gate during the pouring of a casting might cause:

  • A lap
  • Microshrinkage
  • Stringers
  • A lamination

The following gas is used intensively for shielding in the gas tungsten-arc welding process:

  • Radon
  • Oxygen
  • Argon
  • Hydrogen

Stringers are a type of discontinuity sometimes found in:

  • Sheet metal
  • Bar stock
  • Forgings
  • Submerged Arc Welds

An alloy is a substance composed of:

  • At least three elements, two of which are metals
  • At least three elements, one of which must be a non-metal
  • Two or more elements, of which at least one is a metal
  • Two or more elements, of which at least one is a non-metal

Heat treat cracks may be caused by:

  • Unequal heating or cooling of the material
  • Localized stresses below the tensile strength of the material
  • Too high a heat-treatment temperature
  • Use of the part at high temperature

What is the measure of rigidity?

  • Ultimate strength
  • Allowable strength
  • Modulus of elasticity
  • Yield strength

A large molecule with two alternating mers is known as

  • Poly
  • Plastics
  • Copolymers
  • Polymers

NDT is used for locating only those discontinuities open to the surface:

  • True
  • False

_____________ is known as the application of fluid mechanics in engineering.

  • Pneumatics
  • Hydraulics
  • Electro-pneumatics
  • Hydro-pneumatics

Spot welding is usually performed using:

  • A very low current passed for a very short time
  • A very high current passed for a very short time
  • A very low current passed for a very long time
  • A very high current passed for a very long time

Double taxation is a disadvantage of which business organization?

  • Sole proprietorship
  • Partnership
  • Corporation
  • Enterprise

Sense and slope of angles with respect to the reference axes is called _________.

  • Magnitude
  • Direction
  • Vectors
  • Displacement

In Metro Manila, AM radio with airtime from 9 PM to 12 midnight is ____.

  • Class A
  • Class B
  • Class C
  • Class D

What do you call earth and stone mixed with the iron oxides?

  • Gauze
  • Gauge
  • Pressure
  • Atmosheric

Seams are sub-surface discontinuities

  • True
  • False

In a rolling mill, flattening and elongation of metal is accomplished by:

  • Tensile stresses
  • Bending stresses
  • Primarily compressive stresses
  • High frequency cyclical loads

What is the value of the universal gas constant in kJ/mol •K?

  • 10.73
  • 1.986
  • 8.314
  • 1545

In the beginning all steel is perfect:

  • True
  • False

Which discontinuity is not normally found in a casting?

  • Misrun
  • Porosity
  • Shrinkage
  • Slugging

A metal forming operation which allows three dimensional control over the shape of the product is:

  • Rolling
  • Extruding
  • Forging
  • All of the above

The process in which a steel is heated above the upper critical temperature into the austenite and then cooled slowly through the transformation range in the furnace or a good heat insulated material is known as:

  • Tempering
  • Full annealing
  • Normalizing
  • Quenching

Which term best describes what is sought by NDT?

  • Surface irregularities
  • Sub-surface holes and cracks
  • Any breaks in the continuity of metal structure
  • Any welding defect

A burst is _____________ discontinuity.

  • An inherent
  • A processing
  • A service
  • All of the above

In which of the following might you expect to find a seam?

  • Forgings
  • Castings
  • Bar stock
  • Sheet or plate material

33 What is the lowest-temperature diffusion hardening process and does not require a quench?

  • Nitriding
  • Compounding
  • Oxidizing
  • Oxidizers

The grain size in a material may be controlled by:

  • The cooling rate from the liquid to solid state
  • The amount of cold working
  • Heat treatment for allotropic materials
  • Any of the above

What field of study encompasses the procurement and production of metals?

  • Metallurgy
  • Alloy
  • Energy
  • Duellurgy

Electroplating sometimes decreases the fatigue strength of highly stressed parts largely as a result of:

  • Corrosion of the surface under the plating due to entrapped elecrolyte
  • Hydrogen embrittlement
  • Improper cleaning of the part after elecroplating
  • The build up of stresses in fillets

A flaw which can resemble a cold shut is:

  • An undercut in the weld
  • A hot tear in a casting
  • A blowhole in a casting
  • A forging lap

What term represents the share of participation in business organizations?

  • Franchise
  • Partnership
  • Stock
  • Corporation

A cold shut is an inherent defect that may be caused by:

  • Gases given off during casting and trapped in the metal
  • Not enough metal available to fill the mold
  • Too low of a temperature of the metal poured
  • More rapid cooling of thin sections that adjoin heavier masses of metal which are slower to cool

What refers to an actual forve that arises to oppose relative motion between contacting forces?

  • Action force
  • Reaction force
  • Friction
  • Drag

The CPM was developed by Rand and Walker in what year?

  • 1957
  • 1958
  • 1959
  • 1960

The acronym EDM refers to:

  • Engineering design materials
  • Energy discharge machines
  • Electro dynamic machining
  • Electric discharge machining

Metals which cannot be work hardened are those which:

  • Recrystallize at room temperature
  • Recrystallize at very high temperatures
  • Recrystallize at the curie temperature
  • Recrystallize above the curie temperature

A burst may be found in a:

  • Casting
  • Forging
  • Ingot
  • Weld

A metal support for holding cores in place within a sand mold is called:

  • A core
  • A chill
  • A chaplet
  • A spacer

All station must promote the FIlipino music by playing ___ OPM every hour.

  • 2
  • 4
  • 1
  • 3

As a metals hardness increases:

  • Its ability to deform is increased
  • Its strength in tension is increased
  • Its strength in compression increases
  • Its notch toughness is increased

Grinding cracks occur crosswise to grinding wheel rotation

  • True
  • False

Galvanizing is a process of applying to iron and steel products a protective layer of:

  • Tin and tin compounds
  • Zinc and zinc compounds
  • Aluminum and aluminum compounds
  • Copper and copper compounds
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