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