Single Stage Transistor Amplifiers Mcqs

This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “Single Stage Transistor Amplifiers”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Single Stage Transistor Amplifiers comprehensively.

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1.
A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ________________________?

RC

RC || RE

RC – RE

RC + RE

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3.
A transistor converts __________________?

C. power into a.c. power

C. power into d.c. power

High resistance into low resistance

None of the above

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4.
In transistor amplifiers, we generally use______________ capacitors?

Electrolytic

Mica

Paper

Air

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5.
The value of collector load RC in a transistor amplifier is _______________the output impedance of the transistor?

The same as

Less than

More than

None of the above

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6.
The output power of a transistor amplifier is more than the input power because the additional power is supplied by__________________?

Transistor

Biasing circuit

Collector supply VCC

None of the above

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7.
A transistor amplifier has high output impedance because ______________?

Emitter is heavily doped

Collector has reverse bias

Collector is wider than emitter or base

None of the above

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8.
CC configuration is used for impedance matching because its ________________?

Input impedance is very high

Input impedance is low

Output impedance is very low

None of the above

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9.
The d.c. load of a transistor amplifier is generally_______________ that of a a.c. load?

The same as

Less than

More than

None of the above

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10.
If the input capacitor of a transistor amplifier is short-circuited, then_________________?

Transistor will be destroyed

Biasing conditions will change

Signal will not reach the base

None of the above

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11.
A CE amplifier is also called _______________ circuit?

Grounded emitter

Grounded base

Grounded collector

None of the above

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12.
If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be_______________?

High

Very high

Moderate

Low

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13.
The radio wave picked up by the receiving antenna is amplified about _________________ times to have reasonable sound output?

1000

A million

100

10000

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15.
The purpose of a coupling capacitor in a transistor amplifier is to ___________________?

Increase the output impedance of transistor

Protect the transistor

Pass a.c. and block d.c.

Provide biasing

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