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 19 of 48

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Q181.
Assertion (A): Potentiometers can not be used as error detectors in position control systems.

Reason (R): The resolution of a potentiometer places an upper limit on its accuracy

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: (d).R is correct but A is wrong
Q182.
Bellows converts

a.

pressure difference into displacement

b.

pressure difference into voltage

c.

displacement into pressure difference

d.

either (a) or (c)

Discuss
Answer: (a).pressure difference into displacement
Q183.
Assertion (A): The steady state response, of a stable, linear, time invariant system, to sinusoidal input depends on initial conditions.

Reason (R): Frequency response, in steady state, is obtained by replacing s in the transfer function by jฯ‰

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: (d).R is correct but A is wrong
Q184.
Bode magnitude plot is drawn between

a.

magnitude of network function and ฯ‰

b.

dB magnitude and log ฯ‰

c.

dB magnitude and ฯ‰

d.

loge (magnitude) and log ฯ‰

Discuss
Answer: (b).dB magnitude and log ฯ‰
Q185.
First column elements of Routh's tabulation are 3, 5, -3/4, 1/2, 2. It means that there

a.

is one root in left half s plane

b.

are two roots in left half s plane

c.

are two roots in right half s plane

d.

is one root in right half s plane

Discuss
Answer: (c).are two roots in right half s plane
Q186.
When a unit step voltage drives a lag network the output

a.

remains constant at unit step value

b.

increases exponentially from zero to final value

c.

decreases exponentially from 1 to 0

d.

either (b) of (c) depending on values of R and C

Discuss
Answer: (b).increases exponentially from zero to final value
Q187.
A system has its two poles on the negative real axis and one pair of poles lies on jฯ‰ axis. The system is

a.

stable

b.

unstable

c.

limitedly stable

d.

either (a) or (c)

Discuss
Answer: (c).limitedly stable
Q188.
In a minimum phase system

a.

all poles lie in the left half plane

b.

all zeros lie in the left half plane

c.

all poles lie in the right half plane

d.

all except one pole or zero lie in the left half plane

Discuss
Answer: (b).all zeros lie in the left half plane
Q189.
A stepper motor is

a.

a two phase induction motor

b.

is a kind of rotating amplifier

c.

is an electromagnetic transducer used to convert an angular position of shaft into electrical signal

d.

is an electromechanical device which actuates a train of step angular movements in response to a train of input pulses on one to one basis

Discuss
Answer: (d).is an electromechanical device which actuates a train of step angular movements in response to a train of input pulses on one to one basis
Q190.
In a two phase ac servomotor rotor resistance is R and rotor reactance is X. The speed curve will be linear if

a.

X/R << 1

b.

X/R >> 1

c.

X/R = 1

d.

X² = R

Discuss
Answer: (a).X/R << 1
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