Transistors Archives - Page 8 of 10 - MCQ and Quiz for Exams

71. The value of a of a transistor is ___________

more than 1

less than 1

1

none of the above

Detailed SolutionThe value of a of a transistor is ___________

72. For germanium transistor amplifier, VCE should ___________ for faithful amplification

Be zero

Be 0.2 V

Not fall below 0.7 V

None of the above

Detailed SolutionFor germanium transistor amplifier, VCE should ___________ for faithful amplification

73. At series resonance, the phase angle between applied voltage and circuit is ___________

90Â°

180Â°

0Â°

None of the above

Detailed SolutionAt series resonance, the phase angle between applied voltage and circuit is ___________

74. The Q of an LC circuit is given by ___________

2pfr x R

R / 2pfrL

2pfrL / R

R2/2pfrL

Detailed SolutionThe Q of an LC circuit is given by ___________

75. A resonant circuit contains ___________ elements

R and L only

R and C only

Only R

L and C

Detailed SolutionA resonant circuit contains ___________ elements

76. The stabilisation of operating point in potential divider method is provided by ___________

RE consideration

RC consideration

VCC consideration

None of the above

Detailed SolutionThe stabilisation of operating point in potential divider method is provided by ___________

77. Double tuned circuits are used in ___________ stages of a radio receiver

IF

Audio

Output

None of the above

Detailed SolutionDouble tuned circuits are used in ___________ stages of a radio receiver

78. The Q of a tuned circuit refers to the property of ___________

Sensitivity

Fidelity

Selectivity

None of the above

Detailed SolutionThe Q of a tuned circuit refers to the property of ___________

79. In a base resistor method, if the value of Ã changes by 50, then collector current will change by a factor

25

50

100

200

Detailed SolutionIn a base resistor method, if the value of Ã changes by 50, then collector current will change by a factor

80. The zero signal IC is generally ___________ mA in the initial stages of a transistor amplifier

4

1

3

More than 10

Detailed SolutionThe zero signal IC is generally ___________ mA in the initial stages of a transistor amplifier

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