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 9 of 48

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Q81.
A thermometer requires 1 minute to indicate 98% of its final response to a step input. If it is a first order system the time constant is

a.

1 minute

b.

0.5 minute

c.

0.25 minute

d.

0.1 minute

Discuss
Answer: (c).0.25 minute
Q82.
Assertion (A): A slight change in pole-zero configuration can cause only minor changes in root locus configuration.

Reason (R): Asymptotes show the behaviour of root loci for |s| >> 1

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: (d).R is correct but A is wrong
Q83.
In a second order system Ο‰n = 10 rad/sec and ΞΆ = 0.1, then Ο‰d =

a.

9.1 rad/sec

b.

9.95 rad/sec

c.

9 rad/sec

d.

1 rad/sec

Discuss
Answer: (b).9.95 rad/sec
Q84.
In a second order undamped system, the poles are on

a.

positive real axis

b.

imaginary axis

c.

negative real axis

d.

either (a) or (c)

Discuss
Answer: (b).imaginary axis
Q85.
The transient response of a second order system is given by following equation. For 5% criterion the settling time is

a.

0.25 sec

b.

0.75 sec

c.

1.25 sec

d.

4 sec

Discuss
Answer: (b).0.75 sec
Q86.
For the system in the given figure, the transfer function C(s)/R(s) is

a.

G1 + G2 + G3

b.

G1 G2 + G3

c.

G1 G2 G3

d.

(G1 + G2) G3

Discuss
Answer: (b).G1 G2 + G3
Q87.
For the system in the given figure, the characteristic equation is

a.

s² + s(3 + 6a) + 6 = 0

b.

s² + s(3 + 12a) + 12 = 0

c.

s² + 3s = 0

d.

s² + 6s = 0

Discuss
Answer: (a).s² + s(3 + 6a) + 6 = 0
Q88.
In the given figure the transfer function C(s)/N(s) =

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q89.
The following transfer function can be for

a.

lead compensator

b.

lag compensator

c.

lead-lag compensator

d.

either (a) or (b)

Discuss
Answer: (c).lead-lag compensator
Q90.
The system of the given figure

a.

has two poles and one zero in left half plane

b.

has two poles and one zero in right half plane

c.

has two poles in left half plane and zero in right half plane

d.

none of the above

Discuss
Answer: (c).has two poles in left half plane and zero in right half plane
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