Correct Answer:
The collector-emitter current with no input
Note: This Question is unanswered, help us to find answer for this one
2. True or False: Schottky diodes have very high reverse recovery times compared to P-N diodes.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
3. What can be observed in a tunnel diode connected in forward bias?
Answer
Correct Answer:
Negative Resistance
Note: This Question is unanswered, help us to find answer for this one
4. True or false: Doping a silicon crystal with phosphorous results in a p-type semiconductor.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
5. Trans-conductance is
Answer
Correct Answer:
the ratio of the current variation at the output to the voltage variation at the input.
Note: This Question is unanswered, help us to find answer for this one
6. Two identical bulbs connected in series with an ideal voltage supply glow _______ either one of the bulbs connected to the same supply by itself.
Answer
Correct Answer:
more dimly than
Note: This Question is unanswered, help us to find answer for this one
7. True or False: In a Class A amplifier 50% of the input signal is used - the active element carries current half of each cycle, and is turned off for the other half.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
8. Which of these is used in the graphical analysis of non-linear circuits?
Answer
Correct Answer:
Load line
Note: This Question is unanswered, help us to find answer for this one
9. In an N-channel depletion mode FET, the negative gate-source voltage at which the depletion region expands to completely close the conductive channel is called:
Answer
Correct Answer:
pinch-off voltage
Note: This Question is unanswered, help us to find answer for this one
10. Compare the currents of these two circuits: (1) a battery connected in parallel with four identical parallel resistors and (2) the same battery connected to only three of the identical parallel resistors.
Answer
Correct Answer:
More current flows in the circuit with four resistors.
Note: This Question is unanswered, help us to find answer for this one
11. In a series RLC alternating-current circuit, which element will dominate the reactance of the circuit when the frequency is below resonance?
Answer
Correct Answer:
the capacitor
Note: This Question is unanswered, help us to find answer for this one
12. True or False? A transformer requires a ferrite core.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
13. In a real op-amp, the voltage required across the input terminals to drive the output to zero is called:
Answer
Correct Answer:
input offset voltage
Note: This Question is unanswered, help us to find answer for this one
14. In a non-inverting operational amplifier circuit, where is the feedback path?
Answer
Correct Answer:
Between output and inverting input
Note: This Question is unanswered, help us to find answer for this one
15. What is another name for a common collector amplifier?
Answer
Correct Answer:
emitter follower
Note: This Question is unanswered, help us to find answer for this one
16. Which of the following statements is certainly true about two capacitors that have been charged in series?
Answer
Correct Answer:
The same amount of charge is stored in each capacitor.
Note: This Question is unanswered, help us to find answer for this one
17. When voltage across a varactor diode is varied, there is a change in its
Answer
Correct Answer:
Capacitance
Note: This Question is unanswered, help us to find answer for this one
18. In a 50 ohm system, 0dBm is how many milliwatts?
Answer
Correct Answer:
1
Note: This Question is unanswered, help us to find answer for this one
19. What is the term used for the leakage current that flows through a photodiode when no photons are entering it?
Answer
Correct Answer:
Dark current
Note: This Question is unanswered, help us to find answer for this one
20. A low pass filter is intended to:
Answer
Correct Answer:
Filter frequencies above its cutoff.
Note: This Question is unanswered, help us to find answer for this one
21. Which of these is NOT a method used for doping semiconductors?
Answer
Correct Answer:
Etching
Note: This Question is unanswered, help us to find answer for this one
22. In a circuit with a capacitor and a resistor in series with an alternating-current supply, how does the phase of the current in the circuit related to the phase of the voltage of the supply?
Answer
Correct Answer:
The current leads the voltage.
Note: This Question is unanswered, help us to find answer for this one
23. Which of these is a common application of a varactor diode?
Answer
Correct Answer:
Tuning circuit
Note: This Question is unanswered, help us to find answer for this one
24. An PIN diode will look like a high resistance value when forward biased.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
25. True or False? An analog circuit cannot function without a connection to earth ground.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
26. Which is the output terminal in a BJT connected in a common-emitter configuration?
Answer
Correct Answer:
collector
Note: This Question is unanswered, help us to find answer for this one
27. In an alternating-current circuit, what is the relationship between the impedance of a resistor and the frequency of the current?
Answer
Correct Answer:
The impedance is independent of frequency.
Note: This Question is unanswered, help us to find answer for this one
28. Under ideal conditions, which input voltage does an op-amp amplify?
Answer
Correct Answer:
differential input voltage
Note: This Question is unanswered, help us to find answer for this one
29. True or False? Incandescent light bulbs can only be used in alternating-current circuits.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
30. Which of the following are appropriate units for impedance?
Answer
Correct Answer:
Ohms
Note: This Question is unanswered, help us to find answer for this one
31. In a circuit with a resistor and an inductor in series with an alternating-current supply, how does is the phase of the current in the circuit related to the phase of the voltage of the supply?
Answer
Correct Answer:
The current lags the voltage.
Note: This Question is unanswered, help us to find answer for this one
32. True or False: Zener breakdown and Avalanche breakdown can occur in the same diode.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
33. An ideal power divider has how much signal loss from input to each output port?
Answer
Correct Answer:
3dB
Note: This Question is unanswered, help us to find answer for this one
34. True or False: The ratio of visible light produced to power consumed is more for LEDs than for incandescent light bulbs.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
35. Which of the following statements is certainly true about two capacitors that have been charged in parallel?
Answer
Correct Answer:
Each capacitor has the same voltage drop.
Note: This Question is unanswered, help us to find answer for this one
36. Which of these has no P-N junctions?
Answer
Correct Answer:
Thermistor
Note: This Question is unanswered, help us to find answer for this one
37. Which of these devices has a rectifying metal-semiconductor junction?
Answer
Correct Answer:
Schottky diode
Note: This Question is unanswered, help us to find answer for this one
38. How does the total capacitance of two capacitors arranged together in series compare to the individual capacitances of each?
Answer
Correct Answer:
The total capacitance is less than either of the individual capacitances.
Note: This Question is unanswered, help us to find answer for this one
39. In which technique is the frequency of a carrier signal varied according to the amplitude of an information-bearing signal?
Answer
Correct Answer:
frequency modulation
Note: This Question is unanswered, help us to find answer for this one
40. Compare the currents of these two circuits: (1) a battery connected in series with four identical series resistors and (2) the same battery connected to only three of the identical series resistors.
Answer
Correct Answer:
More current flows in the circuit with three resistors.
Note: This Question is unanswered, help us to find answer for this one
41. When a series RLC circuit is driven at resonance, how does the impedance of the circuit compare to the resistance in the circuit?
Answer
Correct Answer:
The impedance is equal to the resistance.
Note: This Question is unanswered, help us to find answer for this one
42. The application of electric voltage to a P-N junction is known as:
Answer
Correct Answer:
Bias
Note: This Question is unanswered, help us to find answer for this one
43. In a series RLC alternating-current circuit, which element will dominate the reactance of the circuit when the frequency is above resonance?
Answer
Correct Answer:
the inductor
Note: This Question is unanswered, help us to find answer for this one
44. Which of these Amplifier class operates in linear portion of characteristic curve
Answer
Correct Answer:
Class A
Note: This Question is unanswered, help us to find answer for this one
45. In an alternating-current circuit, what is the relationship between the impedance of an inductor and the frequency of the current?
Answer
Correct Answer:
The impedance increases with frequency.
Note: This Question is unanswered, help us to find answer for this one
46. True or False? Current can only flow through a battery from the negative terminal to the positive terminal.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
47. What is the effect of a reverse bias on the depletion region of a diode?
Answer
Correct Answer:
It increases in width.
Note: This Question is unanswered, help us to find answer for this one
48. Which of the following are appropriate units for electromotive force?
Answer
Correct Answer:
Volts
Note: This Question is unanswered, help us to find answer for this one
49. The impedance of a capacitance ______ as a function of frequency.
Answer
Correct Answer:
Decreases
Note: This Question is unanswered, help us to find answer for this one
50. In an N-channel enhancement mode FET, the positive gate-source voltage required to form the depletion region and the conductive channel is called:
Answer
Correct Answer:
threshold voltage
Note: This Question is unanswered, help us to find answer for this one
51. Two identical bulbs connected in parallel with each other and an ideal voltage supply glow _______ either one of the bulbs connected to the same supply by itself.
Answer
Correct Answer:
equally brightly compared with
Note: This Question is unanswered, help us to find answer for this one
52. Which of these is a terminal in a field effect transistor?
Answer
Correct Answer:
drain
Note: This Question is unanswered, help us to find answer for this one
53. What kind of semiconductor material is created by doping a silicon crystal with boron?
Answer
Correct Answer:
p-type
Note: This Question is unanswered, help us to find answer for this one
54. As frequency increases, the impedance of an inductor?
Answer
Correct Answer:
Increases
Note: This Question is unanswered, help us to find answer for this one
55. In a series circuit consisting of a battery and two resistors with different resistances, how do the currents through the two resistors compare?
Answer
Correct Answer:
The same amount of current flows through each resistor.
Note: This Question is unanswered, help us to find answer for this one
56. How does the total capacitance of two capacitors arranged together in parallel compare to the individual capacitances of each?
Answer
Correct Answer:
The total capacitance is greater than either of the individual capacitances.
Note: This Question is unanswered, help us to find answer for this one
57. In a circuit consisting of a battery in parallel with two identical parallel resistors, how do the currents through the two resistors compare?
Answer
Correct Answer:
The same amount of current flows through each resistor.
Note: This Question is unanswered, help us to find answer for this one
58. Which of the following are appropriate units for capacitance?
Answer
Correct Answer:
Farads
Note: This Question is unanswered, help us to find answer for this one
59. In a step-down transformer, which is larger ?
Answer
Correct Answer:
Primary Voltage
Note: This Question is unanswered, help us to find answer for this one
60. Which of the following are appropriate units for resistance?
Answer
Correct Answer:
Ohms
Note: This Question is unanswered, help us to find answer for this one
61. In what form is the energy stored in a charged capacitor?
Answer
Correct Answer:
The energy is stored as an electric field.
Note: This Question is unanswered, help us to find answer for this one
62. Which is the correct way to connect a voltmeter with the circuit element being measured?
Answer
Correct Answer:
in parallel
Note: This Question is unanswered, help us to find answer for this one
63. In a series circuit consisting of a battery and two identical resistors, how do the currents through the two resistors compare?
Answer
Correct Answer:
The same amount of current flows through each resistor.
Note: This Question is unanswered, help us to find answer for this one
64. Which of the following are appropriate units for electric potential?
Answer
Correct Answer:
Volts
Note: This Question is unanswered, help us to find answer for this one
65. What is the term used for the process by which a diode converts alternating current into direct current?
Answer
Correct Answer:
Rectification
Note: This Question is unanswered, help us to find answer for this one
66. For what purpose is a Zener diode normally used?
Answer
Correct Answer:
voltage regulation
Note: This Question is unanswered, help us to find answer for this one
67. Which of the following physical arrangements is a simple example of a capacitor?
Answer
Correct Answer:
two parallel metal sheets
Note: This Question is unanswered, help us to find answer for this one
68. Which electronic component can be used to conduct current only in one direction?
Answer
Correct Answer:
diode
Note: This Question is unanswered, help us to find answer for this one
69. A four-diode bridge may be used for
Answer
Correct Answer:
Full-wave Rectification
Note: This Question is unanswered, help us to find answer for this one
70. Which of the following physical arrangements is a simple example of an inductor?
Answer
Correct Answer:
a coil of insulated wire
Note: This Question is unanswered, help us to find answer for this one
71. What is the name for a circuit that produces a repetitive signal like a square wave or sine wave?
Answer
Correct Answer:
oscillator
Note: This Question is unanswered, help us to find answer for this one
72. Which is the correct way to connect an ammeter with the circuit element being measured?
Answer
Correct Answer:
in series
Note: This Question is unanswered, help us to find answer for this one
73. What is the forward voltage drop in a normal silicon diode?
Answer
Correct Answer:
0.6 – 0.7 volts
Note: This Question is unanswered, help us to find answer for this one
74. What is the difference between the upper and lower frequencies in a continuous set of frequencies called?
Answer
Correct Answer:
bandwidth
Note: This Question is unanswered, help us to find answer for this one
75. True or False? Circuit elements in series always have the same current as each other.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
76. What is the ratio of a transistor’s signal output to its signal input called?
Answer
Correct Answer:
Gain
Note: This Question is unanswered, help us to find answer for this one
77. What is the resulting resistance of 4 equal resistors connected in parallel?
Answer
Correct Answer:
One quarter of the individual resistor.
Note: This Question is unanswered, help us to find answer for this one
78. True or False: If a diode is forward biased, its P-type region is connected to the positive terminal of a battery.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
79. Under what physical conditions is magnetic energy stored in an inductor?
Answer
Correct Answer:
when current is flowing through the inductor
Note: This Question is unanswered, help us to find answer for this one
80. Which of the following applications is a typical use for a transformer?
Answer
Correct Answer:
changing the voltage of an alternating-current signal
Note: This Question is unanswered, help us to find answer for this one
81. Which of the following is true about the resistance in a "short circuit?"
Answer
Correct Answer:
A short circuit has very little resistance.
Note: This Question is unanswered, help us to find answer for this one
82. True or False: A photodiode connected in photoconductive mode has better response time than that connected in photovoltaic mode.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
83. A diplexer has how many output connections?
Answer
Correct Answer:
Two
Note: This Question is unanswered, help us to find answer for this one
84. Which components form a Darlington pair?
Answer
Correct Answer:
Two bipolar transistors
Note: This Question is unanswered, help us to find answer for this one
85. How is the charge stored in a capacitor related to the voltage applied to the capacitor?
Answer
Correct Answer:
The charge is proportional to the applied voltage.
Note: This Question is unanswered, help us to find answer for this one
86. What is the open-loop gain of an ideal op-amp?
Answer
Correct Answer:
Infinite
Note: This Question is unanswered, help us to find answer for this one
87. True or False? A variable inductor can only be constructed with the use of superconductors.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
88. Two inductors connected in series certainly have
Answer
Correct Answer:
the same current
Note: This Question is unanswered, help us to find answer for this one
89. What is the term for the maximum rate of change of output voltage of an op-amp?
Answer
Correct Answer:
slew rate
Note: This Question is unanswered, help us to find answer for this one
90. The voltage at which a Zener diode starts conducting when reverse biased is called:
Answer
Correct Answer:
Breakdown Voltage
Note: This Question is unanswered, help us to find answer for this one
91. A typical material used for capacitor leads is
Answer
Correct Answer:
tinned copper
Note: This Question is unanswered, help us to find answer for this one
92. In an alternating-current circuit, what is the relationship between the impedance of a capacitor and the frequency of the current?
Answer
Correct Answer:
The impedance decreases with frequency.
Note: This Question is unanswered, help us to find answer for this one
93. What is the term used for a circuit in which, for a sinusoidal input with frequency f, any steady state output is also sinusoidal with frequency f?
Answer
Correct Answer:
Linear circuit
Note: This Question is unanswered, help us to find answer for this one
94. What is the common-mode-rejection-ratio (CMRR) of an ideal op-amp?
Answer
Correct Answer:
Infinite
Note: This Question is unanswered, help us to find answer for this one
