Transistors

31. 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 ___________

32. Transistor biasing is generally provided by a ___________

Biasing circuit
Bias battery
Diode
None of the above

Detailed SolutionTransistor biasing is generally provided by a ___________

33. 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

34. Frequencies above ___________ kHz are called radio frequencies

2
10
50
200

Detailed SolutionFrequencies above ___________ kHz are called radio frequencies

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

0°
90°
180°
270°

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

36. 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 ___________

37. 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 ___________

38. 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 ___________

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

free electrons
holes
donor ions
acceptor ions

Detailed SolutionIn a npn transistor, ___________ are the minority carriers

40. 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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