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 83 of 103

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Q821.
A certain transistor has ฮฑdc of 0.98 and a collectors leakage current of 5 ฮผA. If IE = 1 mA, the base current will be

a.

35 ฮผA

b.

25 ฮผA

c.

15 ฮผA

d.

5 ฮผA

Discuss
Answer: (c).15 ฮผA
Q822.
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 input signal-to noise ratio is

a.

2

b.

10

c.

20

d.

100

Discuss
Answer: (d).100
Q823.
Assertion (A): A good op-amp should have very large band width

Reason (R): An ideal op-amp should have infinite input resistance and zero output resistance

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: (a).Both A and R are correct and R is correct explanation for A
Q824.
In all base driver amplifiers

a.

ac collector voltage is 180° out of phase with ac base voltage

b.

ac emitter voltage is 180° out of phase with ac base voltage

c.

ac collector voltage is in phase with ac base voltage

d.

none of the above

Discuss
Answer: (a).ac collector voltage is 180° out of phase with ac base voltage
Q825.
The horizontal intercept of dc load line is the same as ideal

a.

cut off point

b.

saturation point

c.

operating point

d.

quasi saturation point

Discuss
Answer: (a).cut off point
Q826.
In figure the dc emitter current of each transistor is about

a.

4 mA

b.

2 mA

c.

3 mA

d.

1 mA

Discuss
Answer: (d).1 mA
Q827.
Assume that op-amp in figure is ideal. If input Vi is triangular, the output V0 will be

a.

square wave

b.

sine wave

c.

triangular wave

d.

parabolic wave

Discuss
Answer: (a).square wave
Q828.
In the diode circuit of figure the diodes are ideal. The average current through ammeter is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q829.
The critical frequency of the circuit of figure is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q830.
Find resistance RB to bring transistor to threshold of saturation VCB = 0, VBE = 0.7 V, a = 0.96

a.

1.5 kฮฉ

b.

15 kฮฉ

c.

10 kฮฉ

d.

1 kฮฉ

Discuss
Answer: (a).1.5 kฮฉ
Page 83 of 103