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.
Generally the gain of a transistor amplifier falls at high frequencies due to the

a.

internal capacitance of device

b.

coupling capacitor at the I/P

c.

skin effect

d.

coupling capacitor at the O/P

Discuss
Answer: (a).internal capacitance of device
Q372.
A transistor with a = 0.9 and ICBO = 10 ฮผA is biased so that IBQ = 90 ฮผA. Then ICQ will be

a.

910 mA

b.

5 mA

c.

5.25 mA

d.

4.95 mA

Discuss
Answer: (a).910 mA
Q373.
A CB amplifier has a = 0.98 and RL = 600 ฮฉ. If IE = 3.5 mA, the current gain is

a.

1

b.

0.98

c.

0.98 x 3.5

d.

3.5/0.98

Discuss
Answer: (b).0.98
Q374.
funity of an op-amp is about 1 kHz.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q375.
Assertion (A): In an RC coupled amplifier the junction capacitances can be neglected at low frequencies but not at high frequencies

Reason (R): Capacitive reactance is inversely proportional to frequency.

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
Q376.
In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half of the secondary winding is 30 V. Then PIV is

a.

30 V

b.

60 V

c.

15 V

d.

10 V

Discuss
Answer: (b).60 V
Q377.
A class C amplifier has input frequency of 200 kHz. If width of collector pulses is 0.1 ฮผs, duty cycle is

a.

1%

b.

2%

c.

10%

d.

20%

Discuss
Answer: (b).2%
Q378.
Output of a phase splitter is

a.

a pair of sine waves of unequal amplitude

b.

a pair of sine waves of equal amplitudes

c.

a pair of sine waves of equal amplitudes and opposite phase

d.

a pair of sine waves of unequal amplitudes and opposite phase

Discuss
Answer: (c).a pair of sine waves of equal amplitudes and opposite phase
Q379.
In a transistor the minimum and maximum values of ฮฒdc are 100 and 121. The proper value of ฮฒdc to be used to locate Q point is

a.

100

b.

121

c.

110.5

d.

110

Discuss
Answer: (d).110
Q380.
The input to an op-amp integrating amplifier is a constant voltage. The output will be

a.

a constant voltage

b.

a sawtooth wave

c.

a ramp

d.

ac voltage

Discuss
Answer: (d).ac voltage
Page 38 of 103