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Provides training on troubleshooting and maintaining electronic systems used in industrial settings, ensuring smooth operations and minimizing downtime.
A low power, low current device.
A diode conducts current under normal conditions when it is _________
When a pure semiconductor is heated, what happens to its resistance?
Why do we add impurities on semiconductor materials?
UJT in terms of junction's location is not symmetrical.
Equivalent Circuit of a Unijunction Transistor
Calculate the power dissipation of a diode having ID = 40 mA.
Being a learner in Electronics 10, which of the seven career in Electronics you will choose? Explain in 3 to 5 sentence paragraph.
The structure of UJT is very much similar to an N-channel JFET.
A 5:1 transformer is connected to a half wave rectifier circuit with a 50k ohms load. Compute for the DC current if the input peak voltage is 220V.
For a UJT, RB1 may vary from 5kΩ down to 50Ω for a corresponding change of IE from 50 mA to 0 mA.
The efficiency of a half-wave rectifier is _______
Interbase resistance of a UJT is the resistance between emitter and pn junction when the emitter current is zero.
System that provide links to the applicable electronic maintenance documentation.
The fan put of a 7400 NAND gate is
A career in electronics where he works in one or more areas of power-generating equipment, power-transmitting equipment, electric motors, machinery control, and lighting and wiring installation.
What do you call for the gaps left behind by electrons as they are liberated from their respected orbits?
In a PUT, the cathode can be biased to a desired voltage with an external voltage divider, so that when the anode voltage exceeds this “programmed” level, the PUT turns on.
Give at least 5 various branches in electronics.
Positive Temperature Coefficient means
A half-wave rectifier is used to supply 50V d.c. to a resistive load of 800 Ω. The diode has a resistance of 25 Ω. Calculate a.c. voltage required.
A silicon diode displays a forward voltage of .25V at 10mA current at 300 Kelvin. Find the reverse saturation current. (in micro Ampere) *no need to include the unit. 3 decimal places only.
Once Programmable Unijunction Transistor is in the on state, the removal of gate voltage will turn the device off.
Mobile phone chargers are used to charge phone batteries by plugging it to AC power outlets. What type of semiconductor application is employed in the process?
Why Si diodes are more preferred in the manufacture of semiconductor devices?
It is the maximum amount of voltage the diode can withstand in reverse bias mode on a continual basis.
A hexadecimal odometer displays F 52 F. The next reading will be
NAND. gates are preferred over others because these
These are materials that have excellent current carrying capacity.
In a reverse bias condition, the depletion region offers more resistance to these majority carriers.
Choose 1 subsystem of Onboard Maintenance System
Who among in 1959 from Texas Instruments developed the first integrated circuits?
A debouncing circuit is
An OR gate has 6 inputs. The number of input words in its truth table are
It is installed in many systems throughout the aircraft including navigation systems, flight control systems, environmental control systems, and others.
Addition of pentavalent impurity to a semiconductor creates _____.
According to this law, the sum of voltages on a closed loop is equal to zero.
The device which controls the flow of electrons is called _______ device. These devices are the main building blocks of electronic circuits.
Which of the following is not a three terminal device?
Given the circuit above, determine the value of Vo. Assume that GaAs has a potential barrier of 1.2V.
Describe the different advantages of electronics.
In a semiconductor, the conduction of current is due to _______
The information from BITE are sent to the?
What happens when a p-n junction is forward biased?
A career in electronics where he maintains controllers, assembly equipment, copying machines, robots, and other automated or computerized devices.
Storage of 1 KB means the following number of bytes
Determine RB1 (in ohms) for a silicon PUT if it is determined that η = 0.5, Peak Voltage= 12.3 V and RB2= 1k ohms. (type in the value of the correct answer ONLY)
What type of impurities produce n-type semiconductor?
The silicon bilateral switch has the ability to provide positive and negative cycles.
When a PN junction is connected to any external bias, it is considered in thermal equilibrium condition.
For an ideal UJT, the emitter firing potential is equivalent to the intrinsic stand-off ratio multiplied by the supply voltage.
Diode that is always connected in reverse bias condition.
The current in a reverse biased PN junction ______
Which of the following does not belong to the group?
Majority Carrier in a P-type Semiconductor.
The main advantage of UJT is that it offers negative resistance characteristics.
Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is
These are materials that have excellent current carrying capacity or allow good flow of current through them.
Defined as a type of extrinsic semiconductor doped with a trivalent impurity element which has three electrons in its valence shell.
If a diode is forward biased,
Which of the following offers good temperature stability?
Determine the current (I) in the given circuit.
Pick out the CORRECT statement:
The purpose of adding impurity in the semiconductor crystal is to increase the number of free electrons or holes to make it __________
One application of a half wave rectifier is __________
These type of semiconductors are in their purest form by nature of their existence.
What is the resistor value of an ideal diode in the region of conduction?
In case of OR gate, no matter what the number of inputs, a
In the energy band phenomenon, at absolute zero temperature, the valence band is ____________.
In the energy band phenomenon, with the increase in temperature, the resistivity of the material _______ and the conductivity ___________.
Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?
Which of the following is not true about semiconductors?
Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bitsynchronous counter is
An AND gate will function as OR if
Avalanche breakdown is a condition in which a diode __________.
Indicate which of the following three binary additions are correct?1.1011 + 1010 = 10101II. 1010 + 1101 = 10111III. 1010 + 1101 = 11111
In a forward bias condition, further increase in the external applied voltage will increase the size of the depletion region.
These are materials that are bad conductors of current and not allow the flow of current through them as they do not have current carrying capacity.
Positive logic in a logic circuit is one in which
If the arrow of crystal diode symbol is positive with respect to the bar, the the diode is in what condition?
Semiconductors in which intentionally impurities are added for making it conductive.
It is the process by which an impurity is added to a semiconductor.
In the energy band phenomenon, at absolute zero temperature, the conduction band is ____________.
What type of electron emission is employed on vacuum tubes?
The motion of electrons through a _______ gives us electric current.
-The word electronics is derived from ______ mechanics, which means to study the behavior of an electron under different conditions of applied electric field.
What is formed when a dielectric is placed between two parallel conductors?
Most of the digital computers do not have floating point hardware because
Potential barrier of a Silicon.
The number of Boolean functions that can be generated by n variables is equal to
Determine Vo1 and Vo2 in the given circuit.
Which of the following electronic components was invented by Shockley, Bardeen and Brattain?
The most commonly used semiconductor is _______
What is the lightest subatomic particle?
The number 1000 would appear just immediately after
The application of external voltage across the two terminals.
A reverse-biased silicon diode has about 0.7 V across it
A zener diode has ______ pn junction/s.
Diode vacuum tube was the first electronic component invented by _________
CMC stands for?
Subject code for Aircraft Maintenance Computer System?
Which of the following gate is a two-level logic gate
Examples of Semiconductor.
A UJT is operated with gate junction forward- biased while the JFET is normally operated with the emitter junction reverse-biased.
Defined as a type of extrinsic semiconductor doped with a pentavalent impurity element which has five electrons in its valence shell.
The state of an ideal diode in the region of non conduction is ________
NSS stands for?
Which is the determining factor for triggering of SUS and SBS?
A semiconductor doped with a pentavalent impurity element which has five electrons in its valence shell.
These are a special class of elements having a conductivity between that of a good conductor and that of an insulator.
Common rating of Silicon Unilateral Switch and Silicon Bilateral Switch
These are semiconductors in which intentionally impurities are added to make the element conductive.
DC average current of a half wave rectifier output is ___________
Determine the dc load voltage in the given circuit. Assume the circuit to be ideal.
In a silicon bilateral switch, gate terminal can be used to turn off the device.
It is the main processing unit for an on board maintenance system.
Which of the following elements doesn't belong to the group?
One application of UJT is it can amplify signal similar to conventional BJTs and FETs.
In PUT, the term programmable is applied because RBB, η, and VP as defined for the UJT can be controlled through the internal resistors RB1, RB2, and the supply voltage VBB.
Which in the career in electronics where he/she is responsible to installs, maintains, and repairs computer equipment and systems?
The width of the depletion layer in a PN junction in forward bias condition _______________
The main function of this additional electrode is to prevent electrons from bouncing back to the plate and to lessen the occurrence of secondary emission.
Determine the current in the given circuit.
Excess-3 code is known as
(10101)2 is
A NAND gate is called a universal logic element because
An electronic system used to facilitate the maintenance of modern aircraft.
Which of the following does not belong to the group.
The datasheet of a certain UJT with a silicon diode gives an intrinsic standoff ratio of 0.5, determine the peak point emitter voltage if the supply is 15V.
DC power output of half wave rectifier is equal to ____________
Outputs from the CMC are provided in the form of?
Electronics is the branch of physics and technology concerned with the design of circuits using _____and microchips, and with the behavior and movement of electrons in a semiconductor, conductor, vacuum, or gas.
OMS stands for?
In which of the following base systems is 123 not a valid number?
According to Shockley's equation, how can we determine the thermal voltage?
Determine the supply voltage for a silicon PUT if it is determined that η = 0.5, Peak Voltage= 12.3 V. (use the correct unit)
These are materials that have a conductivity between a good conductor and an insulator.
Frequency of oscillation of the device is equal to the reciprocal of the total period in _____________.
What is formed when an n-type and a p-type semiconductor are fused together?
These are materials that have no current carrying capacity.
UJT has a unique characteristics that when it is triggered, the emitter current increases regeneratively until it is limited by emitter power supply.
How old am I? (type number only)
Determine the peak load voltage of the circuit. Assume that the circuit is not ideal.
You have an unknown type of diode in a circuit. You measure the voltage across it and find it to be 0.3 V. The diode might be?
The binary code of (21.125)10 is
In a forward bias condition, when the applied voltage is more than the potential barrier of this PN junction the resistance that is offered by the depletion region negligible.
Digital computers are more widely used as compared to analog computers, because they are
BITE stands for?
What is the ambient room temperature for electronic devices?
Which of the following is required in determining the charging period of a unijunction transistor?
The forward voltage drop across a germanium diode is _____.
The ripple factor of a half wave rectifier is ______
What is the octal equivalent of the binary number:10111101
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