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 16 of 48

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Q151.
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 ≤ K ≤ 14

d.

K < 6

Discuss
Answer: (d).K < 6
Q152.
Mechanical impedance is the ratio of

a.

rms force to rms velocity

b.

rms force to rms displacement

c.

rms velocity to rms displacement

d.

none of the above

Discuss
Answer: (a).rms force to rms velocity
Q153.
Whether a linear system is stable or unstable that it

a.

is a property of the system only

b.

depends on the input function only

c.

both (a) and (b)

d.

either (a) or (b)

Discuss
Answer: (a).is a property of the system only
Q154.
A lag compensator is essentially a

a.

low pass filter

b.

high pass filter

c.

band pass filter

d.

either (a) or (b)

Discuss
Answer: (a).low pass filter
Q155.
In the given figure, the number of individual loops is

a.

2

b.

4

c.

5

d.

6

Discuss
Answer: (c).5
Q156.
The block diagram of the given figure for

a.

On-off controller

b.

On-off controller with differential gap

c.

On-off controller with integral gap

d.

Three position controller

Discuss
Answer: (a).On-off controller
Q157.
The radius and centre of M circles are given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q158.
For the system in the given figure the root locus

a.

is on real axis between points s = -1 and s = -3.6

b.

is on real axis between points s = 0 and s = -1

c.

is on real axis between points s = -3.6 and s = ∞

d.

is on real axis between points s = 0 and s = -3.6

Discuss
Answer: (a).is on real axis between points s = -1 and s = -3.6
Q159.
A system has two poles as shown in the given figure. The zeros are at infinity. If input is unit step, the steady state output is

a.

1/4

b.

1/2

c.

1/√2

d.

1

Discuss
Answer: (d).1
Q160.
A unity feedback system has the following open loop frequency response. The gain margin and phase margin are

a.

0 dB, -17°

b.

3.86 dB, -180°

c.

0 dB, 10°

d.

3.86 dB, 10°

Discuss
Answer: (d).3.86 dB, 10°
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