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 32 of 48

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Q311.
Assertion (A): Nyquist stability criterion uses the number of encirclements around (-1 + j0) point in GH plane to determine stability

Reason (R): The (-1 + j0) point in the s plane lies in the Nyquist path.

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: (c).A is correct but R is wrong
Q312.
In a two phase servomotor the voltages applied to the two stator windings

a.

are equal in magnitude and are in phase

b.

are unequal in magnitude but are in phase

c.

are equal in magnitude but have a phase difference of 90°

d.

are unequal in magnitude and have a phase difference of 90°

Discuss
Answer: (d).are unequal in magnitude and have a phase difference of 90°
Q313.
The addition of a pole to the open loop transfer function pulls the root locus

a.

to the right

b.

to the left and making the system more stable

c.

towards right or left depending on the position of new pole

d.

none of the above

Discuss
Answer: (a).to the right
Q314.
Polar plot of a lag-lead compensator is a circle.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q315.
For a type 0 system and unit ramp input, the steady state error is

a.

0

b.

โˆž

c.

1

d.

1/KV

Discuss
Answer: (b).โˆž
Q316.
In control systems the word controller includes

a.

error detector and feedback element

b.

feedback element and control elements

c.

error detector and control elements

d.

error detector, control elements and feedback elements

Discuss
Answer: (c).error detector and control elements
Q317.
Assertion (A): When the forward gain of a system is increased, the transient response becomes oscillatory.

Reason (R): Increasing the forward gain reduces steady state error.

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
Q318.
Assertion (A): A. For a unity feedback system, with G(s) = K/s(s+2) , the settling time of step response is constant for all values of K โ‰ฅ 1

Reason (R): The real part of the roots for all values of K โ‰ฅ 1 are negative.

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
Q319.
Assertion (A): F(s) is valid throughout s plane except at poles of F(s).

Reason (R): £[f1(t) + f2(t)] = £[f1(t)] + £[f2(t)]

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
Q320.
At low frequencies the factor e^(-jฯ‰T) and 1/(1+jฯ‰T) behave simple.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
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