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 16 of 48

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Q151.
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
Q152.
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
Q153.
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
Q154.
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
Q155.
In a two phase servomotor, if R is rotor resistance, X is rotor reactance, L is rotor length D is rotor diameter then

a.

X/R and L/D are both small

b.

X/R is large but L/D is small

c.

X/R is small but L/D is large

d.

X/R and L/D are both large

Discuss
Answer: (c).X/R is small but L/D is large
Q156.
Integral error compensation changes a second order system to

a.

first order system

b.

third order system

c.

fourth order system

d.

either (a) or (b) depending on the system

Discuss
Answer: (b).third order system
Q157.
Assertion (A): If integral control action is included in the controller the offset can be eliminated.

Reason (R): Integral control action may lead to oscillatory response.

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
Q158.
An ac tachometer has a drag cup construction so that

a.

rotor inertia is low

b.

rotor body is conducting

c.

rotor is easy to fabricate

d.

both (a) and (b)

Discuss
Answer: (d).both (a) and (b)
Q159.
If G(s)H(S) = K(s+6)/(s+3)(s+5) the breakaway and break in points in the root locus are located at

a.

-2 and -1

b.

-2.47 and -3.77

c.

-4.27 and -7.73

d.

none of the above

Discuss
Answer: (c).-4.27 and -7.73
Q160.
The constant M loci on G(s) plane are a family of circles.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
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