General Integrated Circuits MCQs

1. True or False? A diode has typically low resistance in one direction and very high resistance in the other direction?

2. What is a term for the maximum rate of change of output voltage per unit time?

3. What can be used as a control system to synchronise the input and output frequencies of a system?

4. Bipolar transistors use what item(s) to conduct

5. True or False? An integrated circuit can be used as an amplifier

6. True or False? A digital circuit only can accept voltages at a certain level.

7. What material is an integrated circuit typically made out of?

8. True or False? A NAND gate would typically be found in a digital circuit.

9. True or False? A mircoprocessor in a computer is often composed of billions of transistors.

10. True or False? An integrated circuit can consist of thousands of transistors?

11. True or False? A truth table can be helpful when analzying a digital circuit.

12. What element is most likely used as a semiconductor?

13. Integrated circuits can be found in which of the following

14. Which of the following is the correct formula for the relationship between voltage, current and resistance?

15. Integrated circuits can be divided into which two categories?

16. A register is a type of integrated circuit that deals with memory.

17. True or False? ULSI stands for Ultra Large Scale Integration

18. What does FET stand for?

19. Suppose you have a simple circuit with V=4 volts and R= 4 Ohm. What is the current that runs through that circuit?

20. Which of the following is a state for logic gates?

21. True or False? Integrated Circuits typically only have one layer.

22. P-N junction semiconductor creates a

23. Which of the following could be an element in an integrated circuit?

24. True or False: An Instrumentation Amplifier has input buffer amplifiers in its construction.

25. True or False: TTL integrated circuits offer more speed than similar RTL circuits.

26. Logic gates usually have how many states?

27. Another name for an integrated circuit is

28. True or False: A DRAM uses one capacitor and one transistor per data bit.

29. What is an IC package with a rectangular housing and two parallel rows of connecting pins called?

30. Which of these is a commonly used simulator for predicting the behaviour of an IC?

31. True or False? Digital circuits typically can have an infinite amount of states.

32. With reference to CMOS and other IC technologies, what is "dynamic power consumption"?

33. Which of these uses a DAC?

34. A thin slice of silicon crystal used in IC fabrication is called a

35. Which of these is a hardware description language used to design an application specific IC?

36. Another name for a base wafer is

37. What is another name for a bistable multivibrator?

38. If you were to design an audio amplifier which type of integrated circuit would you use?

39. What kind of IC can be customised by a user after it has been manufactured?

40. What is the round-off error between the analog input and the digitized output of an ADC called?

41. According to the Nyquist sampling theorem, what should be the minimum sampling rate of an ADC?

42. Which program is useful when trying to solve complex integrated circuits?

43. Which of these is a type of DAC?

44. What does ASIC stand for?

45. True or False: All logic families use the same voltage levels to represent logic 0 and logic 1.

46. In which type of digital logic does the output depend on just the present input (and not on past inputs)?

47. What is an example of volatile memory?

48. A mixed-signal chip is often found in

49. What is correct symbolic name of ground pin on IC?

50. Which of these is NOT a procedure used for IC construction?

51. A circuit that can convert a DC signal to an AC signal with a frequency dependent on the input voltage is called a:

52. What can be used to transfer voltage from a circuit with high output impedance to one with low input impedance?

53. What is a characteristic of asynchronous sequential logic?

54. Ideally, in an LC circuit what happens to the total energy?

55. True or False? A temperature sensor would likely used a digital circuit.

56. What is a method used to separate individual electronic components on a silicon substrate?

57. Parasitics become a problem as a circuit becomes:

58. One technology which uses both BJTs and CMOS is called

59. What kind of feedback is used in an op-amp to make a Schmitt trigger?

60. Logical Effort is a means to:

61. What effect arises when analog frequencies are incorrectly detected due to undersampling?

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

63. With reference to ADCs, what is dither?

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

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

66. In an MMIC what is the frequency range?

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

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

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

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

71. Which of these is a MOSFET amplifier topology?

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

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

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

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

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

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

78. Why are CMOS good for saving power?

79. Which of these is a type of ADC?

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

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

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

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

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

85. If the MOSFET has a thin oxide gate,

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

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

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

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

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

91. 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:

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

93. What does the above symbol represent?

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

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

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

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

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

99. In a paraphase amplifier, _______

100.

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

R is the resistor and

C is the capacitor

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

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

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

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

105. The above diagram represents a _______.

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

107. Parasitic capacitance is:

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

109. What is the conduction angle?

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

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

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

113. Which is a parallel plate capacitor?

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

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

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

117. Which is not a characteristic of MOS circuits?

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

119. 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?

120. In isolation diffusion, _______

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

122. For a band reject filter:

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

124. The decoder in an MOS-ROM contains:

125. 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:

126. Which amplifier has infinite input and output resistance?

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

128. 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_______.

129. 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?

130. 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?

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

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

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

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

135. Which technique consist of manufacturing unit cells?

136. Which is correct of an 'Encoder'?

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

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

139. Which is a characteristic of programmable attenuator?

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

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

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

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

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

145. 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?

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

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

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

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

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

151. The television tube is an example of a_______.

152. What is a flip flop?

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

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

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

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

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

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

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

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

161. 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?