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.
For the system with T(s) = 4/(s²+2s+4), the maximum resonance peak is

a.

4

b.

4/3

c.

2

d.

2/3

Discuss
Answer: (d).2/3
Q332.
The polar plot of transport lag is a unit circle.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q333.
For the transport lag G(jฯ‰) = e^(-jฯ‰T), the polar plot is

a.

a semi circle

b.

a circle

c.

a unit circle

d.

none of the above

Discuss
Answer: (c).a unit circle
Q334.
Consider the following statements:

1. The positiveness of coefficients of characteristic equation is necessary as well as sufficient condition for stability of first and second order systems.
2. The positiveness of coefficients of characteristic equation ensures negativeness of real roots but is not sufficient condition for stability of third and higher order systems.

Out of above statements:

a.

only 1 is correct

b.

both 1 and 2 are correct

c.

only 2 is correct

d.

both are wrong

Discuss
Answer: (b).both 1 and 2 are correct
Q335.
The frequency at which phase angle is 180° is called

a.

phase crossover frequency

b.

stability limit frequency

c.

frequency of limited stability

d.

gain margin frequency

Discuss
Answer: (a).phase crossover frequency
Q336.
In a mechanical accelerometer, the steady state displacement is a measure of

a.

constant input acceleration

b.

constant input velocity

c.

either (a) or (b)

d.

neither (a) nor (b)

Discuss
Answer: (a).constant input acceleration
Q337.
A unity feedback system has G(s) = 10/s(s+1)(s+2). If input r(t) = 1 + 2t + 3/2t³, the steady error is

a.

zero

b.

0.4

c.

4

d.

infinity

Discuss
Answer: (d).infinity
Q338.
Assertion (A): The root locus of a control system is symmetrical about real axis.

Reason (R): For all polynomials with real coefficients, complex poles always occur in conjugate pairs.

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: (a).Both A and R are correct and R is correct explanation of A
Q339.
In log magnitude Bode diagram the slope of high frequency asymptote of (1 + jฯ‰T) is

a.

20 dB per decade

b.

10 dB per decade

c.

20 dB per octave

d.

10 dB per octave

Discuss
Answer: (a).20 dB per decade
Q340.
Assertion (A): The time response, usually, is slower with lag compensation.

Reason (R): The natural undamped frequency and bandwidth are increased.

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
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