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 27 of 103

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Q261.
Which of the following best represents the bandwidth of an actual op-amp?

a.

100 Hz to 1 MHz

b.

0 Hz to 100 kHz

c.

0 Hz to 10 MHz

d.

0 Hz to infinity

Discuss
Answer: (b).0 Hz to 100 kHz
Q262.
Class C amplifier is suitable for

a.

a narrow frequency band

b.

a wide frequency band

c.

audio frequencies

d.

either (b) or (c)

Discuss
Answer: (a).a narrow frequency band
Q263.
In a N-P-N transistor, when emitter junction is forward biased and collector junction is reverse biased the transistor will operate in

a.

active region

b.

saturation region

c.

cut-off region

d.

inverted region

Discuss
Answer: (a).active region
Q264.
A Wien bridge is suitable for

a.

audio frequencies only

b.

radio frequencies only

c.

both audio and radio frequencies

d.

very low frequencies only

Discuss
Answer: (a).audio frequencies only
Q265.
Which op-amp circuit uses a capacitor in series with input and resistance in feedback path?

a.

Differentiating amplifier

b.

Integrating amplifier

c.

Logarithmic amplifier

d.

None of the above

Discuss
Answer: (a).Differentiating amplifier
Q266.
For class B operation the theoretical maximum efficiency is

a.

100%

b.

78.5%

c.

50%

d.

27.5%

Discuss
Answer: (b).78.5%
Q267.
Typical values of current gains for CE, CB and CC amplifiers are

a.

120, 120 and 1 respectively

b.

120, 1 and 120 respectively

c.

1, 120 and 120 respectively

d.

1, 1 and 120 respectively

Discuss
Answer: (b).120, 1 and 120 respectively
Q268.
To draw ac equivalent circuit for a CE amplifier we should

a.

Reduce all dc sources to zero

b.

Short all capacitors

c.

Reduce all dc sources to zero and short all capacitors

d.

Reduce all dc sources to zero and open all capacitors

Discuss
Answer: (c).Reduce all dc sources to zero and short all capacitors
Q269.
The signal input to a given amplifier is made up of 100 mฮฉ signal power and 1 mฮฉ noise power. The amplifier contributes an additional 100 mฮฉ of noise and has a power gain of 20 dB. The noise factor is

a.

1

b.

1.5

c.

2.0

d.

15

Discuss
Answer: (c).2.0
Q270.
Assertion (A): The gain of an FET amplifier can be changed by changing gm

Reason (R): Most receivers use automatic gain control to counteract changes in volume caused by fading

a.

Both A and R are correct and R is correct explanation for A

b.

Both A and R are correct but R is not correct explanation for A

c.

A is correct R is wrong

d.

A is wrong R is correct

Discuss
Answer: (b).Both A and R are correct but R is not correct explanation for A
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