Pneumatics and Hydraulics Technology, Design and Control

Rotary actuators are essentially non-continuous motors, consists of a cylindrical body to which one or two vanes are rigidly attached.

• True
• False

This line could be solid or a series of long dashes if pilot flow must be metered.

• Both a and b
• Metered
• Flow controlled

Fluid Flow is a part of fluid mechanics and deals with fluid dynamics.

• True
• False

The typical inlet water pressure to a home is about 40-45 psi.

• True
• False

PASCAL COMPRESSOR is the best compressor in the world.

• True
• False

Electric motors are example of actuators.

• True
• False

VOLUMETRIC FLOW is used to measure volume of fluid passing a point per unit of time.

• True
• False

It takes approximately one horsepower to compress 4cfm pf atmospheric air to ____ psi.

• 90
• 100
• 80

Most pneumatic circuit can runs at low power -usually around ___________ horsepower.

• 2-3
• 4-5
• 3-4

The unit of compressor is surface area.

• True
• False

FLUID FLOW is a part of fluid mechanics and deals with gas dynamics.

• True
• False

A safety factor is defined as safety factor is equal to bursting pressure over force pressure.

• True
• False

________ run on shop air and are actuated by air palm buttons and limit valves to start and continue a cycle.

• Air logic gauge
• Air logic system
• Air logic controls

Gear pump and screw pump are TYPEs of pumps.

• True
• False

An air compressors may be classified according to low and high pressure.

• True
• False

an air purifier is a device which removes contaminants from the air in a room to improve indoor air quality.

• True
• False

One of the example of actuator is solenoid.

• True
• False

Pneumatic systems are like hydraulic systems, but they use compressed air instead of a fluid to transmit power.

• True
• False

The piston compressors are the best among the other compressors.

• Yes
• No,it must be gauge power compressors
• No,it must be vane compressor

The pneumatic systems are operating with a pressure around 100psi.

• True
• False

Pascal Law was established on 1647-1648.

• True
• False

Pneumatic is a system that is uses to transmit air to control energy.

• True
• False

HERMETIC COMPRESSORS is also called SEALED COMPRESSORS.

• True
• False

Hydraulic parallel circuits usually consist of one pump feeding multiple directional valves that operate actuators one at a time or several in unison.

• True
• False
• No,the answer must be in series

Two main advantages of air-operated circuits are their low initial cost and _______ simplicity.

• Design
• Motor
• Systematic

The symbol K is also called absolute value.

• True
• False

The unit of Weight is Pounds.

• True
• False

The unit of Force is Torque.

• True
• False

The unit of energy is Power per second.

• True
• False

The air compressor is treated in the ______________ stage.

• second
• first
• third

_______ are devices that are explosion -proof and can operate in dirty or wet atmospheres without the problems posed by electrical equipment.

• 3-way valve
• Air drills
• Schematic system

____ are some most efficient hydraulic pumps design.

• Piston pumps
• Mixer pumps
• Valve pumps

The formula of Pascal Law is composed of Area, Force and Pressure.

• True
• False

The unit of compressor is exactly measured as volume of air upon time.

• True
• False

Does a pressure regulator reduce flow ?

• True
• False

The following are examples of atmospheric air contains many harmful impurities.EXCEPT ONE.

• Dust
• None of the above
• Smoke

A _____________ is a device that provides rotational movemen

• valve
• gauge
• motor

An electric System is a network of electrical components deployed to supply transfer, and use mechanical power.

• True
• False

An ____________________requires a control signal and a source of energy.

• pneumatic
• actuator
• vane

SENCO PC10 AIR COMPRESSOR is ONE OF the best compressors.

• True
• False

Pascal Law was established by Plaise Pascal.

• True
• False

Air compressors is a device that converts power into potential energy stored in pressurized air.

• True
• False

An air purifier or _________ is a device which removes contaminants from the air in a room to improve indoor air quality.

• valve filter
• Air cleaner
• inline filter

HYDRAULIC POWER is also called FLUID POWER.

• True
• False

Nitrogen gas is not hazardous to the atmosphere or humans.

• False
• Both a and b
• True

Valve tells the actuator when to operate.

• True
• False

Gear pump is not an example of pumps, it is an example of actuator.

• True
• False

POWER is equal to WORK over FORCE.

• True
• False

Hydraulic circuits are _______ types.

• Parallel
• Series
• Both a and b

turbulent Flow is a type of Fluid Flow.

• True
• False

The __________ consists of the reservoir, pumps, electric motor and entry and exit piping.

• Power reservoir
• Power unit
• Power valve

Cavitation occurs with turbulent liquid flow and may result in pitting on valve surfaces.

• True
• False

Hydraulic pumps are used in hydraulic drive system and can be hydrostatic and _________.

• Hydrodynamic
• Hydromixer
• Hydraulic

A________ ,double-pilot operated directional control valve operates the cylinder. This valve extends and retracts the cylinder according to signals from the air logic controls in the cabinet.

• 3 way
• 4 way
• 5 way

Pressure is measured in units of force per unit of surface area.

• True
• False

FLUID is characterized as Gas and not a liquid.

• True
• False

All schematic symbols and drawings are in accordance with the OSI or also called ?

• International Stable Organization
• International Standards Organization
• International System Organization

A Pneumatic system is a collection of interconnected components using compressed air to do work for automated equipment.

• True
• False

Lobe compressor is also called ?

• Roots blower
• Roots filter
• Roots gauge

Lines without color are considered non-working or to have no flow at present.

• Maybe yes or no
• Yes
• No

Gas laws are important because they can be used to determine the parameters of a mass of gas using theoretical means.

• True
• False

MASS FLOW measures the mass of fluid passing the point in unit time.

• True
• False

Leaks caused by poor plumbing practices and lack of pipe supports can be profuse.

• Sometimes
• False
• True

Gear pumps is an example of pneumatic pumps.

• True
• False

The electrical motion gives an output in terms of linear, rotary or oscillatory motion.

• True
• False

Pneumatics and hydraulic circuits may be ________ type.

• Series
• Both a and b
• Parallel

The differences between hydraulic and pneumatic piping primarily arise from the far higher operating pressures in a hydraulic system.

• True
• False

The unit of temperature is Kelvin.

• True
• False

A sensor is a device that changes a physical parameter to an electrical output.

• True
• False

The unit of Area is cubic meter.

• True
• False

Hydraulic and pneumatic systems are both concerned with the flow of a fluid down to a pipe.

• True
• False

A hydraulic pump is a mechanical device that converts mechanical power into hydraulic energy.

• True
• False

Is 80 psi good water pressure.

• True
• False

VELOCITY OF FLOW measure the mass of fluid passing the point in unit time.

• True
• False

In parallel circuits, fluid can be directed to all actuators simultaneously.

• No
• True
• False

Pneumatic System is composed of valve.

• True
• False

Bourdon gauge-based transducers are generally robust but are low accuracy devices.

• True
• False

Air treatment equipment is designed to work with rotary and reciprocating air.

• True
• False

Piston compressors are by far the most common type of compressor.

• True
• False

Hydraulic pumps are used in hydraulic drive system and can be hydrostatic or hydrodynamic.

• True
• False

Blaise Pascal was a french scientist established the Pascal Law.

• True
• False

The main disadvantage of hydraulics is increased first cost because a power unit is part of the machine.

• True
• False
• Never

the freezing point of a water is 0.

• True
• False

A pump is a machine that moves a fluid from one place to another.

• True
• False

Boyle's law states that, at constant temperature, the pressure P of a gas varies inversely with its volume.

• True
• False

The simplest method of measuring flow is known as variable area flow meter.

• True
• False

A __________ circulates the same fluid repeatdly from a fixed reservoir that is part of the prime mover.

• Hydraulic system
• Motor system
• Pneumatic system

The formula of Pascal Law is composed of Area, Force and Diameter.

• True
• False

It is a physical part of a system that opens and closes to dictate the amount of fluid being allowed to pass through.

• motor
• gauge
• valve

ROTARY SCREW COMPRESSORS is not a type of compressor.

• True
• False

The valve can be utilized to control the direction of flow or the measure of the flow.

• True
• False

FRL units stands for filter,______ and lubricator.

• Regulation
• Regular
• Regulator

Pascal principle is the other term for Pascal Law.

• True
• False

THERMOMETER is a device use to measure temperature.

• True
• False

The two main advantages of air-operated circuits are ________ and design simplicity.

• Initial cost
• Low cost
• Higher cost

Gases are considered also as fluids.

• False
• Seldom
• True

This line is always solid.It can represent plastic tubing as small as 5/32-in.

• Working fluid flow lines
• Return lines
• Reduced pressure line

Fluids such as gases and liquids in motion are called fluid flow.

• True
• False

A _______________ is a device that provides rotational movement.

• systematic
• motor
• mechanical

1 horsepower is equivalent to 9.872psi.

• False
• No, it must be 6.789
• True

Air-operated miniature valves is also called ?

• Pneumatic system
• Air logic controls
• Air control unit

PRESSURE REGULATOR is a control valve that reduces the input pressure of a fluid or gases to a desired value at its input.

• True
• False

One revolution is a 360 degree rotation of the shaft.

• True
• False

The letter "F" is called Force.

• True
• False

Boyle's law was named for Robert Boyle.

• True
• False

Hydraulic system has composed of Hydraulic Cylinder in order to function.

• True
• False

The liquid in a hydraulic system is used to convey energy and produce the required force at the actuators.

• True
• False

The _____ must be able to cycle all functions in the allotted time at a pressure high enough to do the work intended.

• Power unit
• High unit
• Pressure unit

Air operated systems are always cleaner than hydraulic systems because atmospheric air is the force transmitter.

• None of the above
• No
• Yes

________ are used frequently in cases where application is severe.

• Hydraulic motor
• Hydraulic pumps
• Hydraulic gauge

Volumetric flow is the most common measurement in process control.

• True
• False

Air in a pneumatic system must be clean and dry to reduce wear and extend maintenance periods.

• True
• False

Electrical rotary actuators are used primarily in automation applications when a gate, valve ,etc. requires controlled movement to particular rotational positions.

• True
• False

Oil pump is not part of marine air pressure.

• True
• False

This lines would be solid for the pump inlet and a series of short dashes for drains.

• Pump inlet drive
• Pump inlet motor
• Pump inlet line

The air from the compressor is treated in the second stage.

• True
• False

The pneumatic systems are operating with a pressure around 90psi.

• True
• False

Can a pressure regulator increase pressure?

• True
• False

The boiling point of a water is 99.9 degrees.

• True
• False

DC is a short term for DIVERGING Current.

• True
• False

Force is measured in kgf.

• True
• False

The main pressure regulator function is to match the flow of gas through the regulator to the demand for gas placed upon it, whilst maintaining a constant output pressure.

• True
• False

The main disadvantage of hydraulics is increased first cost because a power unit is part of the _________.

• Machine
• System
• Motor

1 CUBIC FOOT is equivalent to 28.317 liters.

• True
• False

The gas laws were developed at the end of the 17th century.

• True
• False

This line could be a solid after a reducing valve or long dashed line for pilot flow.

• Pump inlet
• Reduced pressure line
• Line index

The pipe sizing should be chosen to keep the pressure reasonably constant over the whole system.

• True
• False

Kinetic energy is an energy of static.

• True
• False

The two main types of actuators is rotary and linear.

• True
• False

An air compressor may be classified according to pressure low,medium or high.

• True
• False

A temperature expresses hot and cold only.

• True
• False

LINEAR SOLENOID ACTUATOR is a type of electromagnetic actuator that converts electrical signal into a magnetic field producing a linear motion is called Linear Solenoid.

• True
• False

The unit of Pressure is kilowatt.

• True
• False

A compressor is a machine that squeezes a gas into a smaller volume and pumps it somewhere else at the same time.

• True
• False

Bourdon gauge is composed of Pivot.

• True
• False

A gas charged _________ allows for storage of a volume of fluid to perform work.

• Accumulators
• Motors
• Valves

Both AC and DC motors are rotary devices and there are outputs need to be converted in linear motion.

• True
• False

The unit of temperature is celsius only.

• True
• False

The two palm buttons must be operated at almost the same time or the cylinder will not extend is _________.

• Air control unit
• Pneumatic system
• Air operated miniature

Potential energy is an energy of motion.

• True
• False

The three different types of hydraulic pumps are gear,piston and vape.

• True
• False

A Hydraulic system is closed, and the oil used is stored in a tank or reservoir to which it is returned after used.

• True
• False

AC is a short term for Alternating Current.

• True
• False

Parts of a typical pneumatic system starts at the filter, regulator and ________.

• Lubricator
• Machine
• Drain pumps

An actuator is something that converts energy into ______.

• Motion
• Filter
• Pressure

Basically Pascal law states that any pressure applied to a fluid inside a closed system will transmit that pressure equally in all directions throughout the fluid.

• True
• False

An ______________ actuator is a component of a machine that is responsible for moving and controlling a mechanism or system.

• inline filter
• actuator filter
• valve filter

Three types of pumps are gear ,piston and _______.

• Vane
• Chain
• Limb

Electrical rotary actuators are used primarily in automation applications when a gate, valve ,etc. requires MANUAL movement to particular rotational positions.

• True
• False

The mechanical motion gives an output in terms of linear, rotary, or oscillatory motion.

• True
• False

WORK is equivalent to force multiplied by distance.

• True
• False

A ____________ at the pumps automatically protects the system from overpressure.

• Pressure relief motor
• Pressure relief valve
• Pressure relief gauge

Most pneumatic systems rely on a constant supply of compressed air to make them work.

• True
• False

The unit of POWER is KILOWATT.

• True
• False

Laminar flow is also called Streamline Flow.

• True
• False

Pressure control valve is also called ___________.

• Countermotor system
• Counterbalance valve
• Countermotor valve

The trerice pneumatic controller operates through a coordination of its thermal or pressure sensing system and its air signal relay system.

• True
• False

In pumps in general CC means "CLOSE-CIRCUIT".

• True
• False

FRL stands for filter,regulator and _________.

• Machinery
• Lubricator
• Systematic