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 34 of 48

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Q331.
Assertion (A): In an automobile the amount of fuel admitted to the engine is adjusted as per the difference between desired and actual speed.

Reason (R): The control signal is the amount of fuel to be admitted to the engine.

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
Q332.
A system is highly oscillatory if

a.

gain margin is high

b.

gain margin is close to 1

c.

gain margin is close to 1 or phase margin is zero

d.

gain margin is high and phase margin is 180°

Discuss
Answer: (c).gain margin is close to 1 or phase margin is zero
Q333.
For 0 < M < 1, the centres of M circle lie to the right of origin.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q334.
Assertion (A): In root locus the breakaway and break in points either lie on real axis or occur in complex conjugate pairs.

Reason (R): All root locus asymptotes intersect on real axis.

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
Q335.
In a second order system with a unit step input, the speed of response is high if system is

a.

overdamped

b.

undamped system

c.

critically damped

d.

underdamped

Discuss
Answer: (d).underdamped
Q336.
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
Q337.
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
Q338.
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
Q339.
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
Q340.
An open loop system has a forward path transfer function (42.25)/s(s + 6.5). The unit step response of the system starting from rest will have its maximum value at a time equal to

a.

0 sec

b.

0.56 sec

c.

5.6 sec

d.

infinity

Discuss
Answer: (d).infinity
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