Transistor Audio Power Amplifiers Multiple Choice Questions

Transistor Audio Power Amplifiers

Question 1.

The output stage of a multistage amplifier usually employs ___________

A.

 Push-pull amplifier

B.

 Preamplifier

C.

 Class A power amplifier

D.

 None of the above

Explanation :

Explanation Not Provided

Question 2.

___________ coupling is generally employed in power amplifiers

A.

 Transformer

B.

 RC

C.

 direct

D.

 Impedance

Explanation :

Explanation Not Provided

Question 3.

The class B push-pull circuit can deliver 100 W of a.c. output power. What should be the minimum power rating of each transistor?

A.

 20 W

B.

 40 W

C.

 10 W

D.

 80 W

Explanation :

Explanation Not Provided

Question 4.

The maximum efficiency of resistance loaded class A power amplifier is

A.

 5%

B.

 50%

C.

 30%

D.

 25%

Explanation :

Explanation Not Provided

Question 5.

The disadvantage of impedance matching is that it ___________

A.

 Gives distorted output

B.

 Gives low power output

C.

 Requires a transformer

D.

 None of the above

Explanation :

Explanation Not Provided

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