Analog Electronics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Analog Electronics, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Analog Electronics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Analog Electronics mcq questions that explore various aspects of Analog Electronics problems. Each MCQ is crafted to challenge your understanding of Analog Electronics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Analog Electronics MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Analog Electronics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Analog Electronics knowledge to the test? Let's get started with our carefully curated MCQs!

Analog Electronics MCQs | Page 6 of 103

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Q51.
Negative feedback reduces noise originating at the amplifier input.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q52.
An RC coupled amplifier has an open loop gain of 200 and a lower cutoff frequency of 50 Hz. If negative feedback with ฮฒ = 0.1 is used, the lower cut off frequency will be

a.

about 50 Hz

b.

about 5 Hz

c.

about 2.38 Hz

d.

about 70.5 Hz

Discuss
Answer: (c).about 2.38 Hz
Q53.
The load impedance ZL of a CE amplifier has R and L in series. The phase difference between output and input will be

a.

180°

b.

0

c.

more than 90° but less than 180°

d.

more than 180° but less than 270°

Discuss
Answer: (d).more than 180° but less than 270°
Q54.
If an amplifier with gain of - 1000 and feedback factor ฮฒ = - 0.1 had a gain change of 20% due to temperature, the change in gain of the feedback amplifier would be

a.

10%

b.

5%

c.

0.2%

d.

0.01%

Discuss
Answer: (c).0.2%
Q55.
Which of the following power amplifiers has highest efficiency?

a.

Class A

b.

Class AB

c.

Class B

d.

Class C

Discuss
Answer: (d).Class C
Q56.
A full wave rectifier using centre tapped transformer and a bridge rectifier use similar diodes and have equal no load output voltage. Under equal load conditions

a.

Output voltage of bridge rectifier

b.

Output voltage of bridge rectifier will be more than that of other

c.

Output voltage of both will be exactly equal

d.

Output voltage of any one may be more than that of other

Discuss
Answer: (a).Output voltage of bridge rectifier
Q57.
In an amplifier with a gain of - 1000 and feedback factor ฮฒ = - 0.1, the change in gain is 20% due to temperature. The change in gain for feedback amplifier will be

a.

10%

b.

5%

c.

0.2%

d.

0.01%

Discuss
Answer: (c).0.2%
Q58.
The open loop gain of an amplifier is 200. If negative feedback with ฮฒ = 0.2 is used, the closed loop gain will be

a.

200

b.

40.12

c.

4.878

d.

2.2

Discuss
Answer: (c).4.878
Q59.
In a class C power amplifier the input signal has a frequency of 250 kHz. If the collector current pulses are 0.1 ฮผs wide, the duty cycle of current waveform is

a.

50%

b.

25%

c.

2.5%

d.

0.25%

Discuss
Answer: (c).2.5%
Q60.
The dissipation at the collector is in the quiescent state and increases with excitation in the case of a

a.

class A series fed Amplifier

b.

class A transistor coupled Amplifier

c.

class AB amplifier

d.

class B amplifier

Discuss
Answer: (d).class B amplifier
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