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 13 of 48

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Q121.
A lead compensator is basically a

a.

high pass filter

b.

low pass filter

c.

band stop filter

d.

none of the above

Discuss
Answer: (a).high pass filter
Q122.
In Bode diagram (log magnitude plot) of the factor 1/(1 + jฯ‰T) in the transfer function the log magnitude for ฯ‰ << 1/T can be approximated by

a.

0 dB

b.

20 log ฯ‰T dB

c.

-20 log ฯ‰T dB

d.

none of the above

Discuss
Answer: (a).0 dB
Q123.
Assertion (A): The part of root locus on the real axis is not dependent on the poles and zeros which are not on the real axis.

Reason (R): Poles and zeros which are not on the real axis 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
Q124.
The phase angle of 1/jฯ‰ is constant and equal to - 90° for all values of ฯ‰

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q125.
For underdamped second order systems the rise time is the time required for the response to rise from

a.

0% to 100% of its final value

b.

10% to 90% of its final value

c.

5% to 95% of its final value

d.

either (a) or (b)

Discuss
Answer: (a).0% to 100% of its final value
Q126.
When time constant T in any factor is varied, the shapes of log magnitude and phase angle curves remain the same.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q127.
Which of the following is not correct for two phase servomotor?

a.

Rotor diameter is small

b.

Applied voltages are seldom balanced

c.

Rotor resistance is low

d.

Torque speed curve is linear

Discuss
Answer: (c).Rotor resistance is low
Q128.
DC servomotors are, generally

a.

permanent magnet dc motors

b.

shunt field motors

c.

separately excited dc motors

d.

none of the above

Discuss
Answer: (a).permanent magnet dc motors
Q129.
The gain margin of first and second order systems is infinite.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q130.
One advantage of using polar plot is that it depicts the frequency response characteristics over the entire frequency.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
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