Integrated Circuits MCQ Questions Answers

1. If the signal power delivered to load is 5 watts and the electric power supply to the output circuit is 10 watts, calculate the collector circuit efficiency?

2. What is the value of the voltage difference existing between the two logic levels of an emitter coupled logic?

3. How many dots can be generated in a character matrix of a character waveform at a given instant?

4. What is the range of the resistance of a thin film resistor?

5. In an integrated circuit, what number of gates on a chip is considered a small scale integration?

6. If a person wants to read or write 20 words of 10 bits each, how many storage cells will be used?

7. In which is the masking and etching process used to make an opening in the p- type region?

8. Which application of a counter is related to the transmission and reflection of a pulse over a period of time?

9. A 4 bit adder requires a ______ pin package.

10. What is a flip flop?

11. The television tube is an example of a_______.

12. How many layers of material are there in the basic structure of an integrated circuit?

13. Which application of a read only memory is used when an address is changed by means of a counter?

14. In an ideal operational amplifier, the value of input resistance R is equal to _______.

15. The weight of the most significant bit (MSB) is:

16. In which among the following classes of amplifiers does the current flow all the time in the output circuit? Answers:

17. Which option, in the above image, is the 'diffusion law equation' where N is the amount of substance, t is time, D is diffusion coefficient, X is the position or length?

18. How many leads are there in a dual in line package of an integrated circuit?

19. The time during which the anode voltage should be kept below the maintaining voltage till a critical value is achieved is known as the:

20. In which type of circuit is it possible to fabricate PNP and NPN transistors within the same Silicon substrate?

21. In which waveform generators is the circuit referred to as 'one shot'?

22. Which method of compensation introduces Phase lag into the amplifier?

23. Which is a characteristic of programmable attenuator?

24. What is the slew rate in a monolithic operational amplifier?

25. Which diagram is an unblinking waveform for a character generator

26. Which is correct of an 'Encoder'?

27. Which technique consist of manufacturing unit cells?

28. A 3-db frequency is the one in which:

29. The p- type substrate of an integrated circuit has a resistivity of:

30. What is the value of the lower base emitter breakdown voltage?

31. If the analog voltage in an analog to digital converter is 4 volts, how many pulses will it generate?

32. Which type of transistor construction techniques consists of forming both the emitter and the collector junction by subjecting a semi-conductor to gaseous n- type and p- type impurities?

33. The resistivity of a conductor in an integrated circuit is 10 ohms meter and the thickness of the conductor is 10 meters. Calculate the resistance of the conductor?

34. If the transition of a binary is made from state 0 to 1, the output makes a transition from state 1 to 0. This is a characteristic of_______.

35. In a ladder type D/A converter, _______

36. Which amplifier has infinite input and output resistance?

37. The region of the transistor of an integrated circuit in which both the emitter and the collector junctions are forward biased is known as the:

38. The decoder in an MOS-ROM contains:

39. How is a storage cell identified in the coincident selection method of random access memory?

40. For a band reject filter:

41. What does the bottom layer in an integrated circuit consist of?

42. In isolation diffusion, _______

43. If a 256 bit read only memory is arranged in 40 words of 10 bits each, how many emitters along with the encoder does it consist of?

44. The input resistance of an AC voltage follower is ___________.

45. Which is not a characteristic of MOS circuits?

46. Which shift register is used to perform multiplication or division by multiples of 2?

47. Which shift register is DC stable and is able to work without a minimum clock rate?

48. Which is not an element of medium scale integration?

49. Which is a parallel plate capacitor?

50. The phase of a sinusoidal input voltage undergoes a phase shift from_______.

51. The quiescent value Ic is equal to_______ Here Im ispeak sinusoidal current.

52. What is the correct expression for the common mode rejection ratio where

53. What is the conduction angle?

54. Which is a characteristic of 'ratio less' powerless circuits?

55. Parasitic capacitance is:

56. Which is the correct expression for the 'voltage gain' of a transistor?

57. The above diagram represents a _______.

58. If the input to an operational amplifier comparator is a sine wave, the output will be a ___________

59. In a register, the n number of flip flops can store_______.

60. Which flip flop changes the state of an output with each clock pulse just like a toggle switch?

61. When a bit 1 is present on the MSB line, _______

62.

Which among the following is the correct function for the low 3-db frequency where

R is the resistor and

C is the capacitor

63. In a paraphase amplifier, _______

64. Which type of RAM use a three device information storage cell on the parasitic gate?

65. What is the second stage of an integrated operational amplifier?

66. Which transistor is used only if its collector is at a fixed negative voltage?

67. In a Schottky transistor, what is the value of the base to the collector voltage?

68. A digital system to know whether the sum of binary bits in a particular word is even or odd is known as_______.

69. What does the above symbol represent?

70. Which type of distortion results from new frequency in the output which is not present at the input signal?

71. If in the above diagram, the binary coded decimal's input is 0101, and 0 for any other input, what will be its output? Answers:

72. In a 'race around' condition of an integrated circuit, _______

73. Which network has two input and give an output which is proportional to the difference between the signals at the two inputs?

74. A 'twisted ring counter' is_______ where N represents a clock pulse.

75. The time required for the collector current to rise to a value of 10% of its maximum is known as:

76. In an integrated circuit, how many outputs does an OR gate have?

77. If the MOSFET has a thin oxide gate,

78. A ___________ is used to compensate for the distortion of the digital data pulses transmitted over telephone wires.

79. A silicon controlled switch (SCS) operates at _______

80. __________ is the ratio of change of input offset voltage to the variations in temperature.

81. According to Moore's Law the amount of transistors able to fit on one chip doubles every how often?

82. What is an advantage of using active filters instead of passive in a monolithic IC?

83. Which of these is a type of ADC?

84. Why are CMOS good for saving power?

85. What sort of signal does a relaxation oscillator produce?

86. Which of these can form the inputs of a TTL NAND gate?

87. What is a common source of wasted power in low power circuit design?

88. True or False? Silicon is typically used in mircowave monolithic ICs.

89. True or False: Integrated Injection Logic is generally made using MOSFETs.

90. In synchronous circuits, the maximum possible clock rate is determined by the logic path with the longest propagation delay, called the

91. Which of these is a MOSFET amplifier topology?

92. Which of these technologies consumes most power when at rest?

93. An uncharged capacitor acts like which of the following?

94. True or False? Monolithic circuits have been around the longest period of time.

95. Which type of ADC uses a ladder of comparators, each with a different reference voltage?

96. In an MMIC what is the frequency range?

97. A "totem pole" or "push-pull" output stage employed in a TTL circuit can solve the problem of

98. True or false? Placing a postive voltage at the gate of a p-type enchanced mode FET will turn on the switch.

99. With reference to ADCs, what is dither?

100. According to Moore's Law, the number of transistors on an IC doubles every