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BJT Amplifiers and Oscillators MCQs

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Practice free BJT Amplifiers and Oscillators multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 446 questions — no login required.

Question 19easy

For large signals, class-A amplifier is usually biased

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Question 20easy

A class-B amplifier is biased

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Question 21easy

The maximum efficiency (collector circuit) of a class-A amplifier with a transformer-coupled load is ? percent.

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Question 22easy

A class-B amplifier has high theoretical efficiency of 78.5 percent because

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Question 23easy

Crossover distortion occurs in ? amplifiers.

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Question 24easy

The main use of a class-C amplifier is

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Question 25easy

An amplifier is said to suffer from distortion when its output is

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Question 26easy

When power output of an amplifier doubles, the increase in its power level is ? decibels

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Question 27easy

When output power level of a radio receiver increases by 3 dB, its absolute power changes by a factor of

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