ECICA-UNIT1-Power amplifiers

ECICA-UNIT1-Power amplifiers

University

9 Qs

quiz-placeholder

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ECICA-UNIT1-Power amplifiers

ECICA-UNIT1-Power amplifiers

Assessment

Quiz

Design

University

Medium

Created by

Mr.G. Ravi Kumar Reddy undefined

Used 1+ times

FREE Resource

9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The efficiency of series fed class A power amplifier is

78.5%

25%

50%

100%

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Arrange the power amplifiers in ascending order according to their efficiency

A,B,AB,C

C,AB,B,A

A,AB,B,C

A,AB,C,B

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Arrange the following power amplifiers according to increasing order of their power dissipation

A,AB,B,C

A,B,AB,C

C,B,A,AB

C,B,AB,A

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

The maximum efficiency of class B power amplifier is

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Identify the disadvantage of class B power amplifier when compared to class A power amplifier

Efficiency is more

less power dissipation

more output power

cross over distortion

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

The advantages of class B power amplifier when compared to class A power are

More efficiency

less power dissipation

More output power

less output power

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

20W

25W

160W

200W

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

63%

78.5%

70%

50%

9.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A transformer coupled class A power amplifier supplies 2W of power to speaker.If the supply voltage is 36V and ICQ is 150mA,find the efficiency of the circuit