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.
The slope of log magnitude curve near the cut off frequency is called cut off rate.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q82.
Consider the following statements:

The gain margin and phase margin of an unstable system may respectively be

1. positive, positive
2. positive, negative
3. negative, positive
4. negative, negative

Of these statements

a.

1, 4 are correct

b.

1 and 2 correct

c.

1, 2, 3 are correct

d.

2, 3, 4 are correct

Discuss
Answer: (d).2, 3, 4 are correct
Q83.
A first order element yields almost exact duplication only for constant or slowly varying phenomenon.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q84.
For a stable system

a.

both phase and gain margin are negative

b.

both phase and gain margin are positive

c.

phase margin is positive but gain margin is negative

d.

gain margin is positive but phase margin is negative

Discuss
Answer: (b).both phase and gain margin are positive
Q85.
If G(s)H(s) = K/s²(s²+2s+2), the angle of departure of root locus at s = - 1 + j is

a.

zero

b.

90°

c.

-90°

d.

-180°

Discuss
Answer: (d).-180°
Q86.
Accurate amplitude measurements can be made more easily than accurate phase shift measurements.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q87.
A synchro transmitter receiver unit is a

a.

two phase ac device

b.

3 phase ac device

c.

dc device

d.

1 phase ac device

Discuss
Answer: (d).1 phase ac device
Q88.
The transfer function of transportation lag is

a.

G(jฯ‰) = e^(jฯ‰T)

b.

G(jฯ‰) = e^(-jฯ‰T)

c.

G(jฯ‰) = (1 + jฯ‰T)

d.

G(jฯ‰) = (1 - jฯ‰T)

Discuss
Answer: (b).G(jฯ‰) = e^(-jฯ‰T)
Q89.
As the bandwidth increases, the cost of components

a.

generally decreases

b.

generally increases

c.

may increase or decrease

d.

does not change

Discuss
Answer: (b).generally increases
Q90.
If Nyquist plot has a encirclement of (-1 + jo) point, the system is stable if

a.

there are no poles of G(s) H(s) in right-half plane

b.

there is one pole of G(s) H(s) in right-half plane

c.

there is no zeros of G(s) H(s) in right-half plane

d.

none of the above

Discuss
Answer: (a).there are no poles of G(s) H(s) in right-half plane
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