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.
The polar plot of G(jฯ‰) = 1/jฯ‰ is

a.

positive imaginary axis

b.

positive real axis

c.

negative imaginary axis

d.

negative real axis

Discuss
Answer: (c).negative imaginary axis
Q169.
For an unstable system the gain margin is indicative of how much the gain should be decreased to make the system stable.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q170.
For a stable system having two or more gain crossover frequencies the phase margin is measured

a.

at lowest gain crossover frequency

b.

at highest gain crossover frequency

c.

at the gain crossover frequencies

d.

none of the above

Discuss
Answer: (b).at highest gain crossover frequency
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