Automatic Control Systems MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Automatic Control Systems, 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 Automatic Control Systems 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 Automatic Control Systems mcq questions that explore various aspects of Automatic Control Systems problems. Each MCQ is crafted to challenge your understanding of Automatic Control Systems 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 Automatic Control Systems 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 Automatic Control Systems. 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 Automatic Control Systems knowledge to the test? Let's get started with our carefully curated MCQs!

Automatic Control Systems MCQs | Page 17 of 48

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Q161.
If G(s)H(s) is given by following equation, the closed loop pole will be located at s = -12 when K =

a.

4355

b.

5760

c.

9600

d.

9862

Discuss
Answer: (b).5760
Q162.
In the given figure, the combinations of two non touching loops is

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
Q163.
For the system in the given figure G varies slightly, the ratio of open loop sensitivity to closed loop sensitivity is

a.

1 : (1 + GH)

b.

1 : (1 + GH)¯¹

c.

1 : (1 - GH)

d.

1 : (1 - GH)¯¹

Discuss
Answer: (b).1 : (1 + GH)¯¹
Q164.
The loop transfer function of a feedback system is given below. The number of asymptotes of its root loci are

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (d).4
Q165.
Consider the following statements:

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is correct but R is wrong

d.

R is correct but A is wrong

Discuss
Answer: (b).Both A and R are correct but R is not correct explanation of A
Q166.
For a closed loop system given below. The imaginary axis intercept of the root loci will be

a.

± j 2.8

b.

± J 0.28

c.

± j 1.14

d.

± j 11.4

Discuss
Answer: (a).± j 2.8
Q167.
The polar plot of

a.

does not cross real axis

b.

crosses real axis once

c.

crosses real axis 2 times

d.

crosses real axis 4 times

Discuss
Answer: (a).does not cross real axis
Q168.
A FET is a __________ controlled device whereas a bipolar transistor is a __________ controlled device.

a.

gate, drain

b.

drain, gate

c.

current, voltage

d.

voltage, current

Discuss
Answer: (d).voltage, current
Q169.
In Bode diagram (log magnitude plot) the factor 1/jฯ‰ in the transfer function gives a line having slope

a.

-20 dB per octave

b.

-10 dB per octave

c.

-6 dB per octave

d.

-2 dB per octave

Discuss
Answer: (c).-6 dB per octave
Q170.
A negative feedback system has G(s) = 1/(s+1) and H(s) = K/s(s+2). The closed loop system is stable for

a.

K > 20

b.

15 < K < 19

c.

8 โ‰ค K โ‰ค 14

d.

K < 6

Discuss
Answer: (d).K < 6
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