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 38 of 103

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Q371.
In a full wave voltage doubler circuit, the input frequency is 560 Hz. The ripple frequency is

a.

25 Hz

b.

50 Hz

c.

100 Hz

d.

200 Hz

Discuss
Answer: (c).100 Hz
Q372.
Assertion (A): A tuned amplifier uses a parallel tuned circuit

Reason (R): A tuned amplifier is used to amplify a narrowband frequencies

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
Q373.
Thermal run away of a transistor occurs when

a.

heat dissipation from transistor is excessive

b.

transistor joints melt due to high temperature

c.

there is excessive leakage current due to temperature rise

d.

none of the above

Discuss
Answer: (c).there is excessive leakage current due to temperature rise
Q374.
JFET has __________ degree of isolation between input and output, and a __________ noise figure.

a.

low, low

b.

high, high

c.

low, high

d.

high, low

Discuss
Answer: (d).high, low
Q375.
The advantage of FET over BJT is

a.

high input impedance

b.

lower noise

c.

no thermal runaway

d.

all of the above

Discuss
Answer: (d).all of the above
Q376.
The MOSFET is almost ideal as a switching device because

a.

it has linear characteristics

b.

it works progressively

c.

it consumes low power

d.

it has longer life

Discuss
Answer: (c).it consumes low power
Q377.
The input and output signals for CE amplifier are always

a.

equal

b.

in phase

c.

out of phase

d.

complementary to each other

Discuss
Answer: (c).out of phase
Q378.
In a one pole active low pass filter, the cut off frequency is fc. Then

a.

gain decreases at the rate of 20 dB per decade increase in frequency above fc

b.

gain decreases at the rate of 20 dB per decade decrease in frequency below fc

c.

gain decreases at the rate of 40 dB per decade increase in frequency above fc

d.

gain decreases at the rate 40 dB per decade decrease in frequency below fc

Discuss
Answer: (a).gain decreases at the rate of 20 dB per decade increase in frequency above fc
Q379.
Turn off time of a transistor switch is equal to (where ts is storage time and tf is fall time.)

a.

ts + tf

b.

ts - tf

c.

2ts

d.

2tf

Discuss
Answer: (a).ts + tf
Q380.
In a CE amplifier circuit the emitter by pass capacitor is remove. The ac output voltage

a.

increases

b.

remains the same

c.

increases or decreases

d.

decreases

Discuss
Answer: (d).decreases
Page 38 of 103