17th
Apr
Transistor Audio Power Amplifiers MCQ

Transistor Audio Power Amplifiers MCQ

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  • 17th Apr, 2021
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Transistor Audio Power Amplifiers MCQ Test

Following are mostly asked Transistor audio power amplifiers MCQ test that are designed for professionals like you to crack you interviews. You can take this Transistor audio power amplifiers online test before appearing to you real interview. This Transistor audio power amplifiers quiz there are around 30+ multiple choice questions on Transistor audio power amplifiers with four options.

1) If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least ……………….

  • A. 1 W
  • B. 5 W
  • C. 33 W
  • D. 75 W

2) A class A power amplifier is sometimes called ………….. amplifier.

  • A. Single-ended
  • B. Symmetrical
  • C. Differential
  • D. Reciprocating

3) The output stage of a multistage amplifier usually employs ………..

  • A. Preamplifier
  • B. Push-pull amplifier
  • C. Class A power amplifier
  • D. None of the above

4) The size of a power transistor is made considerably large to …………

  • A. Dissipate heat
  • B. Facilitate connections
  • C. Provide easy handling
  • D. None of the above

5) The push-pull circuit must use …………… operation.

  • A. Class AB
  • B. Class A
  • C. Class B
  • D. Class C

6) Transformer coupling can be used in …………… amplifiers.

  • A. Only power
  • B. Only voltage
  • C. Either power or voltage
  • D. None of the above

7) The most costly coupling is ___________ coupling.

  • A. Transformer
  • B. Impedance
  • C. Direct
  • D. RC

8) An AF amplifier is shielded to ___________.

  • A. Protect from rusting
  • B. Keep the amplifier cool
  • C. Prevent induction due to stray magnetic fields
  • D. None of the above

9) The output stage of a multistage amplifier is also called ___________.

  • A. F stage
  • B. Mixer stage
  • C. Power stage
  • D. Detector stage

10) The pulsating d.c. applied to power amplifier causes ___________.

  • A. Hum in the circuit
  • B. Burning of transistor
  • C. Excessive forward voltage
  • D. None of the above

11) Power amplifiers generally use transformer coupling because transformer per-mits...........

  • A. Good frequency response
  • B. Cooling of the circuit
  • C. Distortionless output
  • D. Impedance matching

12) Transistor in power amplifier is ___________.

  • A. A op-amp
  • B. A passive device
  • C. A op-amp
  • D. A voltage generating device

13) Which of the following audio speaker will be hard to be driven by a power amplifier?

  • A. 2ohm
  • B. 4ohm
  • C. 8ohm
  • D. 12ohm

14) Input stage of power amplifier is also called ___________.

  • A. First op
  • B. Front end
  • C. Normal stage
  • D. Beginning stage

15) The use of amplifier in a circuit is to _____________ for input signal.

  • A. Provide frequency enhancement
  • B. Provide strength
  • C. Provide a phase shift
  • D. Make circuit compatible

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