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Single Stage Transistor Amplifiers

Study 38 Electrical Engineering MCQs with correct answers and explanations.

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31Electrical EngineeringMedium

The purpose of d.c. conditions in a transistor is to________?

ANone of the above

BForward bias the collector

CSet up operating point

DReverse bias the emitter

Correct answer

C. Set up operating point

Explanation

The correct answer is Set up operating point.

32Electrical EngineeringMedium

When a transistor amplifier is operating, the current in any branch is ________?

Adifference of a.c. and d.c.

BSum of a.c. and d.c.

Cc. only

Correct answer

B. Sum of a.c. and d.c.

Explanation

The correct answer is Sum of a.c. and d.c..

33Electrical EngineeringMedium

CC configuration is used for impedance matching because its ________?

AOutput impedance is very low

BInput impedance is very high

CInput impedance is low

DNone of the above

Correct answer

B. Input impedance is very high

Explanation

The correct answer is Input impedance is very high.

34Electrical EngineeringMedium

A single stage transistor amplifier contains________ and associated circuitry?

ATwo transistors

BThree transistor

CNone of the above

DOne transistor

Correct answer

D. One transistor

Explanation

The correct answer is One transistor.

35Electrical EngineeringMedium

In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ________?

ARL

BRC + RL

CRC

Correct answer

C. RC

Explanation

The correct answer is RC.

36Electrical EngineeringMedium

It is generally desired that a transistor should have________ input impedance?

AVery high

BLow

CHigh

DVery low

Correct answer

C. High

Explanation

The correct answer is High.

37Electrical EngineeringMedium

A transistor converts ________?

Ac. power into a.c. power

Bnone of the above

Cc. power into d.c. power

Dhigh resistance into low resistance

Correct answer

A. c. power into a.c. power

Explanation

The correct answer is c. power into a.c. power.

38Electrical EngineeringMedium

The purpose of a coupling capacitor in a transistor amplifier is to ________?

APass a.c. and block d.c.

BProtect the transistor

CIncrease the output impedance of transistor

DProvide biasing

Correct answer

A. Pass a.c. and block d.c.

Explanation

The correct answer is Pass a.c. and block d.c..

31Electrical EngineeringMedium

The purpose of d.c. conditions in a transistor is to________?

ANone of the above

BForward bias the collector

CSet up operating point

DReverse bias the emitter

Correct answer

C. Set up operating point

Explanation

The correct answer is Set up operating point.

32Electrical EngineeringMedium

When a transistor amplifier is operating, the current in any branch is ________?

Adifference of a.c. and d.c.

BSum of a.c. and d.c.

Cc. only

Correct answer

B. Sum of a.c. and d.c.

Explanation

The correct answer is Sum of a.c. and d.c..

33Electrical EngineeringMedium

CC configuration is used for impedance matching because its ________?

AOutput impedance is very low

BInput impedance is very high

CInput impedance is low

DNone of the above

Correct answer

B. Input impedance is very high

Explanation

The correct answer is Input impedance is very high.

34Electrical EngineeringMedium

A single stage transistor amplifier contains________ and associated circuitry?

ATwo transistors

BThree transistor

CNone of the above

DOne transistor

Correct answer

D. One transistor

Explanation

The correct answer is One transistor.

35Electrical EngineeringMedium

In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ________?

ARL

BRC + RL

CRC

Correct answer

C. RC

Explanation

The correct answer is RC.

36Electrical EngineeringMedium

It is generally desired that a transistor should have________ input impedance?

AVery high

BLow

CHigh

DVery low

Correct answer

C. High

Explanation

The correct answer is High.

37Electrical EngineeringMedium

A transistor converts ________?

Ac. power into a.c. power

Bnone of the above

Cc. power into d.c. power

Dhigh resistance into low resistance

Correct answer

A. c. power into a.c. power

Explanation

The correct answer is c. power into a.c. power.

38Electrical EngineeringMedium

The purpose of a coupling capacitor in a transistor amplifier is to ________?

APass a.c. and block d.c.

BProtect the transistor

CIncrease the output impedance of transistor

DProvide biasing

Correct answer

A. Pass a.c. and block d.c.

Explanation

The correct answer is Pass a.c. and block d.c..