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 46 of 48

Discover more Topics under Electronics and Communication Engineering

Q451.
Lag compensation permits a high gain at low frequencies.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q452.
If the poles lie in second quadrant, damping ratio is

a.

1

b.

less than 1

c.

zero

d.

more than 1

Discuss
Answer: (b).less than 1
Q453.
Assertion (A): When performance specifications are given in term of transient response characteristics, root locus method is a suitable method.

Reason (R): When performance specifications in terms of state variables are given, modern control methods can be used.

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
Q454.
The effect of adding poles and zeros can be determined quickly by

a.

Nichols chart

b.

Nyquist plot

c.

Bode plot

d.

Root locus

Discuss
Answer: (c).Bode plot
Q455.
In force current analogue, mechanical mobility is analogous to

a.

impedance Z

b.

admittance Y

c.

reactance X

d.

conductance G

Discuss
Answer: (a).impedance Z
Q456.
If any term in the first column of a Routh array becomes zero, then

a.

Routh criterion cannot be used to determine stability

b.

Routh criterion can be used by substituting a small positive number for zero and completing the array

c.

Routh criterion can be used by substituting a big positive number for zero and completing the array

d.

Routh criterion can be used by substituting a small negative number for zero and completing the array

Discuss
Answer: (b).Routh criterion can be used by substituting a small positive number for zero and completing the array
Q457.
Which of the following features is not associated with Nichols chart?

a.

(0 dB, -180°) point on Nichols chart represent critical Point (-1, 0)

b.

It is symmetric about -180°

c.

M loci are centred about (0 dB, -180°) point

d.

The frequency at intersection of G(jฯ‰) locus and M = +3 dB locus gives bandwidth of closed loop system

Discuss
Answer: (d).The frequency at intersection of G(jฯ‰) locus and M = +3 dB locus gives bandwidth of closed loop system
Q458.
Which of the following can be used as a rotating amplifier in a control system?

1. Amplidyne
2. Separately excited dc generator
3. Synchro
4. Self excited dc generator

Select the answer from the following codes:

a.

3 and 4

b.

1 and 2

c.

1, 2 and 3

d.

all

Discuss
Answer: (b).1 and 2
Q459.
A lead compensator

a.

speeds up the transient response

b.

increases the stability margin

c.

increases the stability margin and speeds up the transient-response.

d.

none of the above.

Discuss
Answer: (c).increases the stability margin and speeds up the transient-response.
Q460.
For type 1 system the velocity lag error is

a.

inversely proportional to bandwidth of system

b.

directly proportional to gain constant

c.

inversely proportional to gain constant

d.

independent of gain constant

Discuss
Answer: (c).inversely proportional to gain constant
Page 46 of 48