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 61 of 103

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Q601.
A transistor may fail due to

a.

open weld at the wire leads to the semi-conductor

b.

short circuit caused by momentary overloads

c.

overheating due to circuit failures

d.

any of the above

Discuss
Answer: (d).any of the above
Q602.
In a P-N-P transistor, with normal bias, the emitter junction

a.

is always reverse biased

b.

offers very high resistance

c.

offers a low resistance

d.

remains open

Discuss
Answer: (c).offers a low resistance
Q603.
The pinch-off voltage is the drain voltage on the shorted gate drain curve above which the drain current becomes

a.

almost negligible

b.

very high

c.

almost constant

d.

highly variable

Discuss
Answer: (c).almost constant
Q604.
Which of the following plot can be used to show the input volt-ampere characteristics of a common-emitter configuration?

a.

VBE versus iB for constant values of VCE

b.

VCE versus iC for constant values of IB

c.

VCE versus iC for constant values of IE

d.

None of the above

Discuss
Answer: (a).VBE versus iB for constant values of VCE
Q605.
A transconductance amplifier has

a.

high input impedance and low output impedance

b.

low input impedance and high output impedance

c.

high input and output impedance

d.

low input and output impedance

Discuss
Answer: (c).high input and output impedance
Q606.
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 output signal-to-noise ratio is

a.

100

b.

50

c.

10

d.

5

Discuss
Answer: (b).50
Q607.
In order to protect a MOSFET against damage from any stray voltage at the gate

a.

grounding rings are provided

b.

terminals are shorted

c.

source terminal is earthed during transit

d.

none of these

Discuss
Answer: (c).source terminal is earthed during transit
Q608.
A dc amplifier can operate

a.

at zero frequency

b.

only at low frequency

c.

only at high frequencies

d.

both at low and high frequencies

Discuss
Answer: (a).at zero frequency
Q609.
Assertion (A): In a common source amplifier with source terminal at ac ground the voltage gain is about gm rd

Reason (R): A common source amplifier is a source follower circuit

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
Q610.
Thermal runaway will take place if the quiescent point is such that

a.

VCE > 1/2VCC

b.

VCE < VCC

c.

VCE < 2VCC

d.

VCE < 1/2VCC

Discuss
Answer: (a).VCE > 1/2VCC
Page 61 of 103