1. Two incandescent light bulbs of 40 W and 60 W ratings are connected in series across the mains Then
a) The bulbs together consume 100 W
b) The bulbs together consume 50 W
c) The 60 W bulb glows brighter d) The 40 W bulb glows brighter
Answer: d
2. For the BJT amplifier circuit with Vcc = +10 V, Rc = 1 kΩ and the DC collector bias current equal to 5
mA. The maximum possible negative output signal swing as determined by the need to keep the transistor in the active region.
a) 0.5 V
b) 1 V
c) 5 V
d) 10 V
Answer: c
3. Four 100 W bulbs are connected in parallel across 200 V supply line. If one
bulb gets fused
a) No bulb will light
b) All the four bulbs will light
c) Rest of three bulbs will light
d) Above B and C
Answer: c
4. For the BJT amplifier circuit with Vcc = +10 V, Rc = 1 kΩ and the DC collector bias current equal to 5 mA. The maximum possible positive output signal swing as determined by the need to keep the transistor in the active region.
a) -1.7 V
b) -2.7 V
c) -3.7 V
d) -4.7 V
Answer: d
5. Resistance of carbon filament lamp.........as the applied voltage increases.
a) Increases
b) Decreases
c) Remains same
d) None of the above
Answer: b
6. For the BJT amplifier circuit with Vcc = +10 V, Rc = 1 kΩ and the DC collector bias current equal to 5
mA. The value of the voltage gain is _______________
a) -2 V/V
b) -4 V/V
c) -10 V/V
d) -20 V/V
Answer: a
7. International ohm is defined in terms of the resistance of
a) A column of mercury
b) A cube of carbon
c) A cube of copper
d) The unit length of wire
Answer: a
8. For a BJt Vt is 5 V, Rc = 1000 ohm and bias current Ic is 12 mA. The value of the voltage gain is
__________
a) -1.2 V/V
b) -2.4 V/V
c) -3.6 V/V
d) -4.8 V/V
Answer: b
9. If peak voltage on a bridge full wave rectifier circuit is 5V and diode cut in voltage os 0.7, then the peak
inverse voltage on diode will be_________
a) 4.3V
b) 9.3V
c) 8.6V
d) 3.6V
Answer: d
10. For the amplifier circuit in the below figure with Vcc = +10 V, Rc = 1 kΩ and the DC collector bias
current equal to Ic. The maximum possible negative output signal swing as determined by the need to keep
the transistor in the active region.
a) 0.1 Ic
b) Ic
c) 10 Ic
d) 100 Ic
Answer: b
11. Efficiency of bridge full wave rectifier is_________
a) 81.2%
b) 50%
c) 40.6%
d) 45.33%
Answer: a
12. For the amplifier circuit in the below figure with Vcc = +10 V, Rc = 1 kΩ and the DC collector bias
current equal to Ic. The maximum possible positive output signal swing as determined by the need to keep
the transistor in the active region.
a) 9.7 + Ic
b) 9.7 – Ic
c) 10.3 + Ic
d) 10.3 – Ic
Answer: a
13. In a bridge full wave rectifier, the input sine wave is 40sin100t. The average output voltage is_________
a) 22.73V
b) 16.93V
c) 25.47V
d) 33.23V
Answer: c
14. The corresponding maximum input signal permitted is
a) 1.64 mV
b) 1.74 mV
c) 1.84 mV
d) 1.94 mV
Answer: d
15. Number of diodes used in a full wave bridge rectifier is_________
a) 1
b) 2
c) 3
d) 4
Answer: d
16. Find the maximum allowed output negative swing without the transistor entering saturation, and
a) 1.27 mV
b) 1.47 mV
c) 1.67 mV
d) 1.87 mV
Answer: d
17. In a bridge full wave rectifier, the input sine wave is 250sin100t. The output ripple frequency will
be_________
a) 50Hz
b) 200Hz
c) 100Hz
d) 25Hz
Answer: c
18. The output in an oscillator is __________
a) Discontinuous
b) Oscillating
c) Self-sustained
d) Spiked
Answer: c
19. In a centre tapped full wave rectifier, the input sine wave is 250sin100t. The output ripple frequency will be _________
a) 50Hz
b) 100Hz
c) 25Hz
d) 200Hz
Answer: b
20. In the output characteristics, the resistance is the __________
a) Slope of the curve
b) Trace of the curve
c) Asymptote of the curve
d) Reciprocal of the slope of the curve
Answer: d
21. DC average current of a bridge full wave rectifier (where Im is the maximum peak current of input).
a) 2Im
b) Im
c) Im/2
d) 1.414Im
Answer: b
22. What is the expression for the Current Amplification factor?
a) ΔIcΔVc
b) ΔVcΔIc
c) (ΔICΔIB)VCE
d) (ΔICΔIB)VBE
Answer: c
23. Ripple factor of bridge full wave rectifier is?
a) 1.414
b) 1.212
c) 0.482
d) 1.321
Answer: c
24. From the output characteristics of a transistor, one cannot calculate __________
a) IB
b) VBE
c) Ic
d) VCE
Answer: b
25. If input frequency is 50Hz then ripple frequency of bridge full wave rectifier will be equal to_________
a) 200Hz
b) 50Hz
c) 45Hz
d) 100Hz
Answer: d
26. In a CE transmitter amplifier, if the amplification factor is 150 and the collector voltage is 4 V and
resistance is 2 kΩ, what should be the value of RB, given that the dc base current is 10 times the signal
current?
a) 5 kΩ
b) 10 kΩ
c) 15 kΩ
d) 20 kΩ
Answer: d
27. Transformer utilization factor of bridge full wave rectifier _________
a) 0.623
b) 0.812
c) 0.693
d) 0.825
Answer: b
28. A low input to the transistor gives __________
a) Low output
b) High Output
c) Normal Output
d) No Output
Answer: b
29. If the peak voltage on a centre tapped full wave rectifier circuit is 5V and diode cut in voltage is 0.7. The
peak inverse voltage on diode is_________
a) 4.3V
b) 9.3V
c) 5.7V
d) 10.7V
Answer: b
30. In the active state, the emitter-base junction has a higher resistance than the collector-base junction.
a) True
b) False
Answer: b
31. If input frequency is 50Hz for a full wave rectifier, the ripple frequency of it would be _________
a) 100Hz
b) 50Hz
c) 25Hz
d) 500Hz
Answer: a
32. If Ie is the current entering the emitter, Ib is the current leaving the base and Ic is the current leaving the
collector in a p-n-p transistor used for amplification, what is the relation between Ie, Ib and Ic?
a) Ie < Ic
b) Ic < Ib
c) Ib < Ic
d) Ie < Ib + Ic
Answer: c
33. Transformer utilization factor of a centre tapped full wave rectifier is_________
a) 0.623
b) 0.678
c) 0.693
d) 0.625
Answer: c
34. Which junction is forward biased when transistor is used as an amplifier?
a) Emitter-Base
b) Emitter-Collector
c) Collector-Base
d) No junction is forward biased
Answer: a
35. Efficiency of a centre tapped full wave rectifier is _________
a) 50%
b) 46%
c) 70%
d) 81.2%
Answer: d
36. A full wave rectifier supplies a load of 1KΩ. The AC voltage applied to diodes is 220V (rms). If diode
resistance is neglected, what is the ripple voltage?
a) 0.562V
b) 0.785V
c) 0.954V
d) 0.344V
Answer: c
37. A full wave rectifier delivers 50W to a load of 200Ω. If the ripple factor is 2%, calculate the AC ripple across the load.
a) 2V
b) 5V
c) 4V
d) 1V
Answer: a
38. A full wave rectifier uses load resistor of 1500Ω. Assume the diodes have Rf=10Ω, Rr=∞. The voltage
applied to diode is 30V with a frequency of 50Hz. Calculate the AC power input.
a) 368.98mW
b) 275.2mW
c) 145.76mW
d) 456.78mW
Answer: b
39. Efficiency of a half wave rectifier is
a) 50%
b) 60%
c) 40.6%
d) 46%
Answer: c
40. If peak voltage for a half wave rectifier circuit is 5V and diode cut in voltage is 0.7, then peak inverse voltage on diode will be?
a) 5V
b) 4.9V
c) 4.3V
d) 6.7V
Answer: c
41. Transformer utilisation factor of a half wave rectifier is _________
a) 0.234
b) 0.279
c) 0.287
d) 0.453
Answer: c
42. If the input frequency of a half wave rectifier is 100Hz, then the ripple frequency will be_________
a) 150Hz
b) 200Hz
c) 100Hz
d) 300Hz
Answer: c
43. Ripple factor of a half wave rectifier is_________(Im is the peak current and RL is load resistance)
a) 1.414
b) 1.21
c) 1.4
d) 0.48
Answer: b
44. Both the junctions in a transistor are forward biased.
a) True
b) False
Answer: b
45. BJT stands for __________
a) Bi-Junction Transfer
b) Blue Junction Transistor
c) Bipolar Junction Transistor
d) Base Junction Transistor
Answer: c
46. The doped region in a transistor are ________
a) Emitter and Collector
b) Emitter and Base
c) Collector and Base
d) Emitter, Collector and Base
Answer: d
47. Which region of the transistor is highly doped?
a) Emitter
b) Base
c) Collector
d) Both Emitter and Collector
Answer: a
48. The diode in a half wave rectifier has a forward resistance RF. The voltage is Vmsinωt and the load
resistance is RL. The DC current is given by _________
a) Vm/√2RL
b) Vm/(RF+RL)π
c) 2Vm/√π
d) Vm/RL
Answer: b
49. In a half wave rectifier, the sine wave input is 50sin50t. If the load resistance is of 1K, then average DC
power output will be?
a) 3.99V
b) 2.5V
c) 5.97V
d) 6.77V
Answer: b
50. In a half wave rectifier, the sine wave input is 200sin300t. The average value of output voltage is?
a) 57.876V
b) 67.453V
c) 63.694V
d) 76.987V
Answer: c
51. Partial specifications of a Zener diode is provided. VZ = 10.0 V, VZK = 9.6 V, and IZT = 50 mA. Assuming that the power rating of a breakdown diode is established at about twice the specified Zener current (IZT), what is the power rating of each of the diodes described above?
a) 1.04 W
b) 0.104 W
c) 10.4 mW
d) 1.04 mW
Answer: a
52. A 9.1-V zener diode exhibits its nominal voltage at a test current of 28 mA. At this current the incremental
resistance is specified as 5 Ω. Find VZ0 of the Zener model.
a) 8.96V
b) 9.03V
c) 9.17V
d) 9.24V
Answer: b
53. A shunt regulator utilizing a zener diode with an incremental resistance of 5 Ω is fed through an 82-Ω
resistor. If the raw supply changes by 1.0 V, what is the corresponding change in the regulated output voltage?
a) 72.7 mV
b) 73.7 mV
c) 74.7 mV
d) 75.7 mV
Answer: c
54. A designer requires a shunt regulator of approximately 20 V. Two kinds of Zener diodes are available: 6.8-V devices with rz of 10 Ω and 5.1-V devices with rz of 30 Ω. For the two major choices possible, find the load regulation. In this calculation neglect the effect of the regulator resistance R.
a) -30mV/mA and 120mV/mA respectively
b) 30mV/mA and 60mV/mA respectively
c) -60mV/mA and +60mV/mA respectively
d) -30mV/mA and -120mV/mA respectively
Answer: d
55. Which of the following relations are correct?
a) IE + IB = IC
b) IC + IB = IE
c) IE + IC = IB
d) IB + IE = IB
Answer: b
56. Which of the following is the correct relationship between base and emitter current of a BJT?
a) IB = β IE
b) IB = IE
c) IB = (β + 1) IE
d) IE = (β + 1) IB
Answer: d
57. For best operation of a BJT, which region must the operating point be set at?
a) Active region
b) Cutoff region
c) Saturation region
d) Reverse active region
Answer: a
58. Which of the following currents in a BJT is also called leakage current?
a) IC
b) IE
c) ICO
d) ICBO
Answer: a
59. Zener diodes are also known as
a) Voltage regulators
b) Forward bias diode
c) Breakdown diode
d) None of the mentioned
Answer: c
60. Which of the following is true about the resistance of a Zener diode?
a) It has an incremental resistance
b) It has dynamic resistance
c) The value of the resistance is the inverse of the slope of the i-v characteristics of the Zener diode
d) All of the mentioned
Answer: d
61. Which of the following is true about the temperature coefficient or TC of the Zener diode?
a) For Zener voltage less than 5V, TC is negative
b) For Zener voltage around 5V, TC can be made zero
c) For higher values of Zener voltage, TC is positive
d) All of the mentioned
Answer: d
62. Which of the following can be used in series with a Zener diode so that combination has almost zero
temperature coefficient?
a) Diode
b) Resistor
c) Transistor
d) MOSFET
Answer: a63. In Zener diode, for currents greater than the knee current, the v-i curve is almost
a) Almost a straight line parallel to y-axis
b) Almost a straight line parallel to x-axis
c) Equally inclined to both the axes with a positive slope
d) Equally inclined to both the axes with a negative slope
Answer: b
64. Zener diodes can be effectively used in voltage regulator. However, they are these days being replaced by
more efficient
a) Operational Amplifier
b) MOSFET
c) Integrated Circuits
d) None of the mentioned
Answer: c
65. In a pnp-BJT, when the E-B junction is forward biased and no voltage is applied across C-B junction,
what happens to the width of the depletion region in the E-B junction?
a) Increases
b) Decreases
c) Remains same
d) Can’t be determined
Answer: b
66. Which of the following statements is true about proper functioning of a BJT?
a) One junction is forward biased and one is reverse biased
b) Both junctions are forward biased
c) Both junctions are reverse biased
d) Can’t be determined
Answer: a
67. What is the typical order of magnitude of the base current for a BJT?
a) 10 -8
b) 10 -9
c) 10 -6
d) 10 -3
Answer: c
68. The collector current in a BJT is temparature-independent.
a) True
b) False
Answer: a
69. During the reverse biased of the diode, the back resistance decrease with the increase of the temperature. Is
it true or false?
a) True
b) False
Answer: a
70. What is the maximum electric field when Vbi=2V , VR=5V and width of the semiconductor is 7cm?
a) -100V/m
b) -200V/m
c) 100V/m
d) 200V/m
Answer: b
71. When the diode is reverse biased with a voltage of 6V and Vbi=0.63V. Calculate the total potential.
a) 6V
b) 6.63V
c) 5.27V
d) 0.63V
Answer: b
72. It is possible to measure the voltage across the potential barrier through a voltmeter?
a) True
b) False
Answer: b
73. How many junction/s do a diode consist?
a) 0
b) 1
c) 2
d) 3
Answer: b
74. If the positive terminal of the battery is connected to the anode of the diode, then it is known as
a) Forward biased
b) Reverse biased
c) Equilibrium
d) Schottky barrier
Answer: a
75. During reverse bias, a small current develops known as
a) Forward current
b) Reverse current
c) Reverse saturation current
d) Active current
Answer: c
76. If the voltage of the potential barrier is V0. A voltage V is applied to the input, at what moment will the barrier
disappear?
a) V< V0
b) V= V0
c) V> V0
d) V<< V0
Answer: b
77. Which of the following is true for a pnp transistor in active region?
a) CB junction is reversed bias and the EB junction is forward bias
b) CB junction is forward bias and the EB junction is forward bias
c) CB junction is forward bias and the EB junction is reverse bias
d) CB junction is reversed bias and the EB junction is reverse bias
Answer: a
78. Which of the following is true for a pnp transistor in saturation region?
a) CB junction is reversed bias and the EB junction is forward bias
b) CB junction is forward bias and the EB junction is forward bias
c) CB junction is forward bias and the EB junction is reverse bias
d) CB junction is reversed bias and the EB junction is reverse bias
Answer: b
79. Which of the following is not a valid type of BJT?
a) PNP
b) NPN
c) PPN
d) NNP
Answer: c
80. In a BJT, the outer layers are much more thick as compared to the middle layer.
a) True
b) False
Answer: a
81. In a BJT, which of the following layers is heavily doped?
a) Collector
b) Emitter
c) Base
d) Electron
Answer: b
82. Which of the following is true for the active region of an npn transistor?
a) The collector current is directly proportional to the base current
b) The potential difference between the emitter and the collector is less than 0.4 V
c) All of the mentioned
d) None of the mentioned
Answer: c
83. Which of the following is true for the saturation region of BJT transistor?
a) The collector current is inversely proportional to the base current
b) The collector current is proportional to the square root of the collector current
c) The natural logarithm of the collector current is directly proportional to the base current
d) None of the mentioned
Answer: b
84. Which of the following is true for a npn transistor in the saturation region?
a) The potential difference between the collector and the base is approximately 0.2V
b) The potential difference between the collector and the base is approximately 0.3V
c) The potential difference between the collector and the base is approximately 0.4V
d) The potential difference between the collector and the base is approximately 0.5V
Answer: d
85. The potential difference between the base and the collector Vcb in a pnp transistor in saturation region
is ________
a) -0.2 V
b) -0.5V
c) 0.2 V
d) 0.5 V
Answer: b
86. For a pnp transistor in the active region the value of Vce (potential difference between the collector and
the base) is
a) Less than 0.3V
b) Less than 3V
c) Greater than 0.3V
d) Greater than 3V
Answer: a
87. Which of the following correctly determines the relation between α and β?
a) β=α/(1-α)
b) α=β/(1-α)
c) β=α/(1-β)
d) β=α*(1-β)
Answer: a
88. The value of IC is precisely zero when the value of IE is zero.
a) True
b) False
Answer: b
89. For common emitter configuration, which of the following is the correct relation?
a) IC < IE
b) IC = βIB
c) IC = αIE
d) IC = IE
Answer: d
90. Which of the following condition is true for cut-off mode?
a) The collector current Is zero
b) The collector current is proportional to the base current
c) The base current is non zero
d) All of the mentioned
Answer: a
91. Which of the following is true for the cut-off region in an npn transistor?
a) Potential difference between the emitter and the base is smaller than 0.5V
b) Potential difference between the emitter and the base is smaller than 0.4V
c) The collector current increases with the increase in the base current
d) The collector current is always zero and the base current is always non zero
Answer: b
92. In a BJT, if the collector-base junction and the base-emitter junction are both reverse-biased, which region is the BJT operating in?
a) Saturation region
b) Active region
c) Cutoff region
d) Reverse active region
Answer: c
93. In a BJT, if the collector-base junction is forward-biased and the base-emitter junction is forward-biased, which region is the BJT operating in?
a) Saturation region
b) Active region
c) Cutoff region
d) Reverse active region
Answer: a
94. For a BJT, for common base configuration the input characteristics are represented by a plot between
which of the following parameters?
a) VBE and IE
b) VBE and IB
c) VCE and IC
d) VCC and IC
Answer: a
95. For a BJT, for common base configuration the output characteristics are represented by a plot between
which of the following parameters?
a) VBE and IB
b) VCE and IC
c) VCB and IC
d) VCE and IB
Answer: c
96. In a BJT, if the collector-base junction is reverse-biased and the base-emitter junction is forward-biased,
which region is the BJT operating in?
a) Saturation region
b) Active region
c) Cutoff region
d) Reverse active region
Answer: b
97. Analog IC process __________
a)Analog signals
b)Digital signals
c)Both A & B
d)None of the above
Answer: a
98. Digital IC process __________
a)Analog signals
b)Digital signals
c)Both A & B
d)None of the above
Answer: b
99. Analog IC are ________ accurate compared with digital IC
a)Less
b)More
c)Alike
d)None of the above
Answer: a
100. Analog IC consume ________ compared with digital IC
a)Less power
b)More power
c)Same power
d)None of the above
Answer: b
101. A transistor takes __________ inductor on a silicon IC chip
a)Less space than
b)More space than
c)Same space as
d)None of the above
Answer: b
102. An audio amplifier is an example of __________
a)Digital IC
b)Linear IC
c)Both digital and linear IC
d)None of the above
Answer: b
103. An integrated circuit (IC) has __________ size
a)Very large
b)Large
c)Extremely small
d)None of the above
Answer: c
104. The advantages of IC are _______
a)Small in size
b)Light in weight
c)Less power consumption
d)All of the above
Answer: d
105. The disadvantage of IC is __________
a)It is not possible to fabricate inductor in IC
b)ICs are very delicate
c)Power dissipation is limited
d)All of the above
Answer: b
106. Applications of IC are __________
a)TV
b)Mobile
c)Laptop
d)All of the above
Answer: d
107. ________ ICs are the most commonly used
a)Thin films
b)Monolithic
c)Hybrid
d)None of the above
Answer: b
108. ___________ is the distance travelled by a signal during the time period of one cycle.
a)Phase
b)Frequency
c)Amplitude
d)Wavelength
Answer: d
109. The maximum or peak value of AC is called as _____________
a)Phase
b)Frequency
c)Amplitude
d)Wavelength
Answer: c
110. The number of cycles completed in one second is called as ___________
a)Phase
b)Frequency
c)Amplitude
d)Wavelength
Answer: b
111. ___________ represents the position of the waveform with respect to time zero
a)Phase
b)Frequency
c)Amplitude
d)Wavelength
Answer: a
112. Electrical sources are capable of _______________
a)Converting nonelectric energy into electric energy
b)Converting electric energy into nonelectric energy
c)Both A and B
d)None of the above
Answer: a
113. Ideal voltage source maintains constant voltage across its terminals _________
a)With respect to current drawn from source
b)Irrespective to current drawn from source
c)Depending on the load connected to it.
d)None of the above
Answer: b
114. Practical voltage source cannot maintain constant voltage across its terminals _________
a)Due to zero internal resistance existing
b)Due to finite non-zero internal resistance existing
c)Due to infinite internal resistance existing
d)None of the above
Answer: b
115. Ideal Current source maintains constant current _________
a)With respect to voltage across it
b)Independent to voltage across it
c)Both A & B
d)None of the above
Answer: b
116. Practical current source cannot maintain constant current _________
a)Due to zero internal resistance existing in parallel
b)Due to finite non-zero internal resistance existing in parallel
c)Due to infinite internal resistance existing in parallel
d)None of the above
Answer: b
117. Calculate the value of following Inductor using colour coding method Red, Orange, Brown, Gold
a)230 H+ 5%
b)23 µH+5%
c)230 µH+5%
d)230 µH+20%
Answer: c
118. Based on the iron core materials used, inductors can be called as ______________
a)Air core inductor
b)Iron core inductor
c)Ferrite core inductor
d)None of the above
Answer: c
119. Based on the ferrite core materials used, inductors can be called as ______________
a)Air core inductor
b)Iron core inductor
c)Ferrite core inductor
d)None of the above
Answer: c
120. Based on the hollow (cardboard) core materials used, inductors can be called as ______________
a)Air core inductor
b)Iron core inductor
c)Ferrite core inductor
d)None of the above
Answer: a
121. Capacitor can be used for _________
a)rectification
b)Amplification
c)Limiting the current
d)Filtering (removing unwanted AC from pulsating DC)
Answer: d
122. Inductor can be used for _________
a)rectification
b)Amplification
c)Limiting the current
d)Filtering (removing unwanted AC from pulsating DC)
Answer: d
123. Inductive reactance is to ____________
a)Oppose change in current
b)Oppose change in voltage
c)Opposes current
d)Store charge in the form of static energy.
Answer: a
124. The capacitance value is directly proportional to _________
a)Area of capacitor
b)Permittivity of the dielectric material
c)Distance between two plates of capacitor
d)Both A and B
Answer: d
125. Capacitive reactance is to ____________
a)Oppose change in current
b)Oppose change in voltage
c)Opposes current
d)Store charge in the form of static energy.
Answer: b
126. The inductance value depends upon _________
a)The number of turns of wire in inductor
b)The material of core
c)The shape & size of core
d)All of the above
Answer: d
127. Which of the following is not a dielectric material
a)Mica
b)Ceramic
c)Copper
d)Glass
Answer: c
128. Calculate the value of following capacitor using colour coding method
Yellow, Violet, Yellow
a)0.47 Farad
b)0.47 nF
c)0.047 µF
d)0.47 µF
Answer: b
129. Resistor can be used for _________
a)rectification
b)Amplification
c)Limiting the current
d)All of the above
Answer: d
130. Calculate the value of following resistor using four band colour coding method
Red, Red, Orange, Gold
a)2200 Ω + 5%
b)22 KΩ + 5%
c)220 KΩ +5%
d)2.2 KΩ + 5%
Answer: b
131. Calculate the value of following resistor using four band colour coding method
Brown, Black, Orange, Gold
a)100 Ω + 5%
b)10 KΩ + 5%
c)100 KΩ +5%
d)1.0 KΩ + 5%
Answer: b
132. Determine colours band for the 1 Kohm resistor using four band colour coding method
a)Brown, Black, Orange, Gold
b)Brown, Black, Red, Gold
c)Brown, Black, Yellow, Gold
d)Brown, Black, Brown, Gold
Answer: b
133. Determine colours band for the 4.7 Kohm resistor using four band colour coding method
a)Yellow, Blue, Red, Gold
b)Orange, Blue, Red, Gold
c)Yellow, Violet, Red, Gold
d)Yellow, Blue, Orange, Gold
Answer: c
134. The capacitance value depends upon _________
a)Area of capacitor
b)Distance between two plates of capacitor
c)Permittivity of the dielectric material
d)All of the above
Answer: d
135. The capacitance value is inversely proportional to _________
a)Area of capacitor
b)Distance between two plates of capacitor
c)Permittivity of the dielectric material
d)All of the above
Answer: b
136. If the value of the applied voltage to a resistor exceeds (rises) above the maximum voltage rating, then the
resistor will be _________.
a) Working as a conductor
b) Working as an insulator
c) Working as a semiconductor
d) Damaged permanently
Answer: d
137. The property of inductance is to _________.
a) Oppose change in current
b) Oppose change in voltage
c) Oppose current
d) Store charge in the form of static energy.
Answer: a
138. It is the maximum allowable value of the voltage that could be applied across the resistor is ____
a) Maximum voltage rating
b) Maximum power rating
c) Peak inverse voltage
d) Knee voltage
Answer: a
139.The smaller value of temperature coefficient will have ________ variation in the resistance value (higher
stability).
a) Less
b) More
c) No
d) None of the above
Answer: a
140. The _____ rating of a resistor is given by the maximum wattage it can dissipate without excessive heat.
a) Maximum voltage rating
b) Maximum power rating
c) Peak inverse voltage
d) Knee voltage
Answer: b
141. By _______ is meant the possible variation from the marked resistance value of a resistor.
a)Maximum voltage rating
b)Maximum power rating
c)Tolerance
d)Knee voltage
Answer: c
142. A 4.7 KΩ resistor with a tolerance of 10% will have an actual resistance anywhere in between __________
a)4000 Ω to 5000 Ω.
b)4070 Ω to 5070 Ω
c)4230 Ω to 5170 Ω
d)4700 Ω to 5700 Ω
Answer: c
143. Unit of resistance is ________
a) Henry
b) Farad
c) Volt
d) Ohm
Answer: d
144. Unit of capacitance is ________
a) Henry
b) Farad
c) Volt
d) Ohm
Answer: b
145. Unit of inductance is ________
a) Henry
b) Farad
c) Volt
d) Ohm
Answer: a
146. The property of resistance is to _________.
a) Oppose change in current
b) Oppose change in voltage
c) Oppose current
d) Store charge in the form of static energy.
Answer: c
147. The property of capacitance is to _________.
a) Oppose change in current
b) Oppose change in voltage
c) Oppose current
d) Generate magnetic field.
Answer: b
148. Passive components ___________ power supply for their working.
a) generate
b) Do not require
c) Require
d) None of the above
Answer: b
149. Applications of active components are ___________
a) Amplifier
b) Rectifier
c) Regulator
d) All of the above
Answer: d
150. Application of passive components is ___________
a) Amplifier
b) Rectifier
c) Regulator
d) all of the above
Answer: d
