General Analog Electronics MCQs

1. What is the common-mode-rejection-ratio (CMRR) of an ideal op-amp?

2. 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?

3. In an alternating-current circuit, what is the relationship between the impedance of a capacitor and the frequency of the current?

4. A typical material used for capacitor leads is

5. The voltage at which a Zener diode starts conducting when reverse biased is called:

6. What is the term for the maximum rate of change of output voltage of an op-amp?

7. Two inductors connected in series certainly have

8. True or False? A variable inductor can only be constructed with the use of superconductors.

9. What is the open-loop gain of an ideal op-amp?

10. How is the charge stored in a capacitor related to the voltage applied to the capacitor?

11. Which components form a Darlington pair?

12. A diplexer has how many output connections?

13. True or False: A photodiode connected in photoconductive mode has better response time than that connected in photovoltaic mode.

14. Which of the following is true about the resistance in a "short circuit?"

15. Which of the following applications is a typical use for a transformer?

16. Under what physical conditions is magnetic energy stored in an inductor?

17. True or False: If a diode is forward biased, its P-type region is connected to the positive terminal of a battery.

18. What is the resulting resistance of 4 equal resistors connected in parallel?

19. What is the ratio of a transistor’s signal output to its signal input called?

20. True or False? Circuit elements in series always have the same current as each other.

21. What is the difference between the upper and lower frequencies in a continuous set of frequencies called?

22. What is the forward voltage drop in a normal silicon diode?

23. Which is the correct way to connect an ammeter with the circuit element being measured?

24. What is the name for a circuit that produces a repetitive signal like a square wave or sine wave?

25. Which of the following physical arrangements is a simple example of an inductor?

26. A four-diode bridge may be used for

27. Which electronic component can be used to conduct current only in one direction?

28. Which of the following physical arrangements is a simple example of a capacitor?

29. For what purpose is a Zener diode normally used?

30. What is the term used for the process by which a diode converts alternating current into direct current?

31. Which of the following are appropriate units for electric potential?

32. What does MOSFET stand for?

33. In a series circuit consisting of a battery and two identical resistors, how do the currents through the two resistors compare?

34. Which is the correct way to connect a voltmeter with the circuit element being measured?

35. In what form is the energy stored in a charged capacitor?

36. Which of the following are appropriate units for resistance?

37. In a step-down transformer, which is larger ?

38. Which of the following are appropriate units for capacitance?

39. In a circuit consisting of a battery in parallel with two identical parallel resistors, how do the currents through the two resistors compare?

40. How does the total capacitance of two capacitors arranged together in parallel compare to the individual capacitances of each?

41. In a series circuit consisting of a battery and two resistors with different resistances, how do the currents through the two resistors compare?

42. As frequency increases, the impedance of an inductor?

43. What kind of semiconductor material is created by doping a silicon crystal with boron?

44. Which of these is a terminal in a field effect transistor?

45. 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.

46. In an N-channel enhancement mode FET, the positive gate-source voltage required to form the depletion region and the conductive channel is called:

47. The impedance of a capacitance ______ as a function of frequency.

48. Which of the following are appropriate units for electromotive force?

49. What is the effect of a reverse bias on the depletion region of a diode?

50. True or False? Current can only flow through a battery from the negative terminal to the positive terminal.

51. In an alternating-current circuit, what is the relationship between the impedance of an inductor and the frequency of the current?

52. Which of these Amplifier class operates in linear portion of characteristic curve

53. In a series RLC alternating-current circuit, which element will dominate the reactance of the circuit when the frequency is above resonance?

54. The application of electric voltage to a P-N junction is known as:

55. When a series RLC circuit is driven at resonance, how does the impedance of the circuit compare to the resistance in the circuit?

56. 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.

57. In which technique is the frequency of a carrier signal varied according to the amplitude of an information-bearing signal?

58. How does the total capacitance of two capacitors arranged together in series compare to the individual capacitances of each?

59. Which of these devices has a rectifying metal-semiconductor junction?

60. Which of these has no P-N junctions?

61. Which of the following statements is certainly true about two capacitors that have been charged in parallel?

62. True or False: The ratio of visible light produced to power consumed is more for LEDs than for incandescent light bulbs.

63. An ideal power divider has how much signal loss from input to each output port?

64. True or False: Zener breakdown and Avalanche breakdown can occur in the same diode.

65. 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?

66. Which of the following are appropriate units for impedance?

67. True or False? Incandescent light bulbs can only be used in alternating-current circuits.

68. Under ideal conditions, which input voltage does an op-amp amplify?

69. In an alternating-current circuit, what is the relationship between the impedance of a resistor and the frequency of the current?

70. Which is the output terminal in a BJT connected in a common-emitter configuration?

71. True or False? An analog circuit cannot function without a connection to earth ground.

72. a circuit that adds a positive or negative dc voltage to an input sine-wave is called a

73. An PIN diode will look like a high resistance value when forward biased.

74. Which of these is a common application of a varactor diode?

75. 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?

76. Which of these is NOT a method used for doping semiconductors?

77. A low pass filter is intended to:

78. What is the term used for the leakage current that flows through a photodiode when no photons are entering it?

79. In a 50 ohm system, 0dBm is how many milliwatts?

80. When voltage across a varactor diode is varied, there is a change in its

81. Which of the following statements is certainly true about two capacitors that have been charged in series?

82. What is another name for a common collector amplifier?

83. In a non-inverting operational amplifier circuit, where is the feedback path?

84. In a real op-amp, the voltage required across the input terminals to drive the output to zero is called:

85. True or False? A transformer requires a ferrite core.

86. In a series RLC alternating-current circuit, which element will dominate the reactance of the circuit when the frequency is below resonance?

87. 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.

88. 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:

89. Which of these is used in the graphical analysis of non-linear circuits?

90. 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.

91. Two identical bulbs connected in series with an ideal voltage supply glow _______ either one of the bulbs connected to the same supply by itself.

92. Trans-conductance is

93. True or false: Doping a silicon crystal with phosphorous results in a p-type semiconductor.

94. What can be observed in a tunnel diode connected in forward bias?

95. True or False: Schottky diodes have very high reverse recovery times compared to P-N diodes.

96. What does a Q-point of a transistor indicate?