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 29 of 48

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Q281.
The log magnitude curve for a constant gain K is a horizontal straight line at a magnitude 20 log K dB.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q282.
Transfer functions of even complicated components can be found by frequency response tests.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q283.
Assertion (A): Feedback control systems offer more accurate control than open loop systems.

Reason (R): The feedback path establishes a link for comparison of input and output and subsequent error correction.

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
Q284.
Examine the following statements

1. Pneumatic systems are fire proof.
2. Pneumatic systems are explosion proof.
3. Hydraulic systems are explosion proof.
4. Hydraulic systems are fire proof.

Which of the above statements are correct?

a.

1 only

b.

1 and 2 only

c.

1 2, 3, 4

d.

2, 3, 4 only

Discuss
Answer: (b).1 and 2 only
Q285.
The addition of a zero to the open loop transfer function

a.

pulls the root locus to the left and makes the system more stable

b.

pulls the root locus to the right and makes the system less stable

c.

either (a) or (b)

d.

neither (a) nor (b)

Discuss
Answer: (a).pulls the root locus to the left and makes the system more stable
Q286.
Assertion (A): For a given system only one of the static error constants is finite and significant.

Reason (R): If finite static error constant is large, the loop gain becomes smaller as ฯ‰ approaches zero.

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
Q287.
Which of the following represents constant magnitude locus for M = 1?

a.

x = -0.5

b.

x = 0

c.

x² + y² = 1

d.

(x + 1)² + y² = 1

Discuss
Answer: (a).x = -0.5
Q288.
Assertion (A): A synchro control transformer has nearly constant impedance across its rotor terminals.

Reason (R): Rotor of a synchro control transformer is cylindrical so as to give uniform flux distribution.

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
Q289.
Generally a servomotor operates at

a.

high torque and high speed

b.

low torque and low speed

c.

low torque and high speed

d.

high torque and low speed

Discuss
Answer: (c).low torque and high speed
Q290.
If C is thermal capacitance, m is mass of liquid and c is specific heat, then

a.

C = mc

b.

c = mC

c.

m = cC

d.

C = (mc)²

Discuss
Answer: (a).C = mc
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