Analog Electronics MCQs with answers Page - 5

Here, you will find a collection of MCQ questions on Analog Electronics. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

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Q. In an op-amp differentiator

  • (A) the amplitude of output is proportional to rate of change of input
  • (B) the amplitude of output is proportional to input
  • (C) output occurs when input is finite and constant
  • (D) polarity of input and output is the same

A

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Q. Which of the following amplifier circuit using junction transistor has the best gain?

  • (A) Common base
  • (B) Common emitter
  • (C) Common collector
  • (D) All have the same gain

A

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Q. Which of the following statements is false?

  • (A) Push pull signals are equal and opposite in phase
  • (B) Class AB operation cannot be used for a push pull audio power output phase
  • (C) A push pull output transformer has a centre-tapped primary
  • (D) All of the above

A

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Q. In deriving ac equivalent circuit for an amplifier circuit we short circuit

  • (A) all resistors
  • (B) all transistors
  • (C) all inductors
  • (D) all capacitors

A

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Q. The horizontal intercept of dc load line is the same as ideal

  • (A) cut off point
  • (B) saturation point
  • (C) operating point
  • (D) quasi saturation point

A

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Q. In all base driver amplifiers

  • (A) ac collector voltage is 180° out of phase with ac base voltage
  • (B) ac emitter voltage is 180° out of phase with ac base voltage
  • (C) ac collector voltage is in phase with ac base voltage
  • (D) none of the above

A

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Q. When a transistor is connected in common emitter mode, it with have

  • (A) negligible input resistance and high output resistance
  • (B) high input resistance and low output resistance
  • (C) medium input resistance and high output resistance
  • (D) low input resistance as well as output resistance

A

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Q. In a transistor leakage current mainly depends on

  • (A) doping of base
  • (B) size of emitter
  • (C) rating of transistor
  • (D) temperature

A

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Q. The encapsulation of transistor is necessary for

  • (A) preventing radio interference
  • (B) preventing photo-emission effects
  • (C) avoiding loss of free electrons
  • (D) mechanical ruggedness

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