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 17 of 103

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Q161.
In calculating output impedance of an amplifier the source is replaced by an open circuit.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q162.
For transistor 2 N 338 the manufacturer specifies Pmax = 100 mW at 250°C free air temperature and maximum junction temperature of 125°C. Its thermal resistance is

a.

10° C/W

b.

100° C/W

c.

1000° C/W

d.

5000° C/W

Discuss
Answer: (c).1000° C/W
Q163.
A 120 V, 30 Hz source feeds a half wave rectifier circuit through a 4 : 1 step down transformer, the average output voltage is

a.

30 V

b.

13.5 V

c.

10 V

d.

7.07 V

Discuss
Answer: (b).13.5 V
Q164.
The slew rate of an ideal op-amp is

a.

very slow

b.

slow

c.

fast

d.

infinitely fast

Discuss
Answer: (d).infinitely fast
Q165.
Regulation of the DC power supply of 12 V, 100 mA is the effective resistance of power supply is 20 ฮฉ

a.

22%

b.

131%

c.

30%

d.

20%

Discuss
Answer: (d).20%
Q166.
Assertion (A): An op-amp has high voltage gain, high input impedance and low output impedance

Reason (R): Negative feedback increases output impedance

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: (c).A is correct R is wrong
Q167.
A transistor has a maximum power dissipation of 350 mW at an ambient temperature of 25°C. If derating factor is 2 mW/°C, the maximum power dissipation for 40°C ambient temperature is

a.

300 mW

b.

330 mW

c.

350 mW

d.

380 mW

Discuss
Answer: (c).350 mW
Q168.
The output voltage waveform of a CE amplifier is fed to a dc coupled CRO. The trace on the screen will be

a.

dc output voltage

b.

ac output voltage

c.

sum of dc and ac output voltage

d.

either (a) or (b)

Discuss
Answer: (c).sum of dc and ac output voltage
Q169.
In an RC phase shift oscillator, the total phase shift of the three RC lead networks is

a.

360°

b.

180°

c.

90°

d.

0°

Discuss
Answer: (b).180°
Q170.
It has been found that in a rectifier circuit with RC filter one RC section reduces ripple by 15%. Two RC sections are used in cascade the reduction in ripple would be

a.

15%

b.

30%

c.

150%

d.

225%

Discuss
Answer: (d).225%
Page 17 of 103