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 29 of 103

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Q281.
Ac signals are given to both inverting and non-inverting terminals of an op-amp. When will the output maximum

a.

when the phase difference between the inputs is 0°

b.

when the phase difference between the inputs in 90°

c.

when the phase difference between the inputs is 180°

d.

when the phase difference between the inputs is 0 or 180°

Discuss
Answer: (c).when the phase difference between the inputs is 180°
Q282.
The input voltage for starting oscillations in an oscillator is caused by

a.

negative feedback

b.

positive feedback

c.

noise voltage in resistors

d.

a special generator

Discuss
Answer: (c).noise voltage in resistors
Q283.
The current flowing in a certain P-N junction at room temperature is 2 x 10¯โท Amp. When a large reverse biased voltage is applied. Calculate the current flowing when 0.1 volts is applied.

a.

9 ฮผA

b.

10 ฮผA

c.

2 ฮผA

d.

4 ฮผA

Discuss
Answer: (a).9 ฮผA
Q284.
In a CE amplifier

a.

both ac and dc load lines have the same slope

b.

the ac load line has more slope than dc load line

c.

the ac load line has less slope than dc load line

d.

the two load lines may have slope more than the other

Discuss
Answer: (b).the ac load line has more slope than dc load line
Q285.
The voltage gain of an amplifier without and with feedback are 100 and 20. The negative feedback is

a.

4%

b.

5%

c.

20%

d.

80%

Discuss
Answer: (a).4%
Q286.
Calculate the conductivity of pure silicon at room temperature when the concentration of carriers is 1.6 x 10¹แดผ per cm³. Take ฮผe = 1500 cm²/V-sec, ฮผh = 500 cm²/V-sec at room temperature,

a.

5.12 x 10¯¹โถ

b.

5 x 10¹โถ

c.

10¹โถ

d.

5 x 10²แดผ

Discuss
Answer: (a).5.12 x 10¯¹โถ
Q287.
A potential of 7 V is applied to a silicon diode. A resistance of 1 kฮฉ is also connected in series. If the diode is forward biased, the current in the circuit is

a.

7 mA

b.

6.3 mA

c.

0.7 mA

d.

0

Discuss
Answer: (b).6.3 mA
Q288.
In a voltage regulated power supply the zener operates in the breakdown region when (Vin is input voltage and Vz is zener breakdown voltage)

a.

Vin < Vz

b.

Vin > Vz

c.

Vin = Vz

d.

both (a) or (b)

Discuss
Answer: (b).Vin > Vz
Q289.
The parameter h11 for CB circuit is higher than that for CE circuit.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q290.
Assertion (A): In CE amplifier the emitter is at ground potential for ac signals

Reason (R): A CE amplifier has near unity voltage gain

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
Page 29 of 103