Transistors Archives - Page 9 of 10 - MCQ and Quiz for Exams

81. The operating point is also called the ___________

Cut off point

Quiescent point

Saturation point

None of the above

Detailed SolutionThe operating point is also called the ___________

82. Transistor biasing is generally provided by a ___________

Biasing circuit

Bias battery

Diode

None of the above

Detailed SolutionTransistor biasing is generally provided by a ___________

83. For proper amplification by a transistor circuit, the operating point should be located at the ___________ of the d.c. load line

The end point

Middle

The maximum current point

None of the above

Detailed SolutionFor proper amplification by a transistor circuit, the operating point should be located at the ___________ of the d.c. load line

84. Frequencies above ___________ kHz are called radio frequencies

2

10

50

200

Detailed SolutionFrequencies above ___________ kHz are called radio frequencies

85. The phase difference between the input and output voltages of a transistor connected in common collector arrangement is ___________

0Â°

90Â°

180Â°

270Â°

Detailed SolutionThe phase difference between the input and output voltages of a transistor connected in common collector arrangement is ___________

86. At series or parallel resonance, the circuit power factor is ___________

0%

5%

10%

8%

Detailed SolutionAt series or parallel resonance, the circuit power factor is ___________

87. The Q of a tuned amplifier is 50. If the resonant frequency for the amplifier is 1000kHZ, then bandwidth is ___________

10kHz

40 kHz

30 kHz

20 kHz

Detailed SolutionThe Q of a tuned amplifier is 50. If the resonant frequency for the amplifier is 1000kHZ, then bandwidth is ___________

88. The Q of a tuned amplifier is generally ___________

Less than 5

Less than 10

More than 10

None of the above

Detailed SolutionThe Q of a tuned amplifier is generally ___________

89. In a npn transistor, ___________ are the minority carriers

free electrons

holes

donor ions

acceptor ions

Detailed SolutionIn a npn transistor, ___________ are the minority carriers

90. The purpose of resistance in the emitter circuit of a transistor amplifier is to ___________

Limit the maximum emitter current

Provide base-emitter bias

Limit the change in emitter current

None of the above

Detailed SolutionThe purpose of resistance in the emitter circuit of a transistor amplifier is to ___________

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