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 31 of 48

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Q301.
In a synchro transmitter, which coil acts as primary?

a.

Rotor

b.

Stator

c.

Partly rotor and partly stator

d.

Tertiary

Discuss
Answer: (a).Rotor
Q302.
Assertion (A): The transient performance of a control system is generally analysed by using unit step function as reference input.

Reason (R): Impulse is the most common input found in practice.

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
Q303.
If a zero is added to a second order underdamped system

a.

the peak overshoot is increased

b.

the peak overshoot is decreased

c.

the peak overshoot remains unchanged

d.

either (a) or (b)

Discuss
Answer: (a).the peak overshoot is increased
Q304.
PID controlled system has

a.

P and I actions in forward path and D action in feedback path

b.

P and I actions in feedback path and actions in forward path

c.

All the three (i.e., P, I and D) actions in forward path

d.

All the three (i.e., P, I and D) actions in feedback path

Discuss
Answer: (a).P and I actions in forward path and D action in feedback path
Q305.
In case of synchro error detector the electrical zero position of control transformer is obtained when angular displacement between rotors is

a.

zero

b.

45°

c.

90°

d.

180°

Discuss
Answer: (c).90°
Q306.
For Bode plot of (1 + jฯ‰T) has

a.

slope of 20 dB/decade and phase angle + tan¯¹ (ฯ‰T)

b.

slope of - 20 dB/decade and phase angle + tan¯¹ (ฯ‰T)

c.

slope of 20 dB/decade and phase angle - tan¯¹ (ฯ‰T)

d.

slope of - 40 dB/decade and phase angle - tan¯¹ (ฯ‰T)

Discuss
Answer: (a).slope of 20 dB/decade and phase angle + tan¯¹ (ฯ‰T)
Q307.
The purpose of series quadrature windings in amplidyne is to

a.

neutralize the effect of armature reaction

b.

reduce commutation difficulties

c.

increase the gain

d.

increase response time

Discuss
Answer: (a).neutralize the effect of armature reaction
Q308.
For the transport lag G(jฯ‰) = e^(-jฯ‰T), the phase angle

a.

is constant

b.

varies linearly with frequency

c.

varies linearly with low frequencies only

d.

values as per square law

Discuss
Answer: (b).varies linearly with frequency
Q309.
In classical analogue, torque is analogous to

a.

current

b.

voltage

c.

charge

d.

voltage gradient

Discuss
Answer: (b).voltage
Q310.
The open loop transfer function of a system is K/s(Js+F). If the frequency at the intersection of - 40 dB/decade line and 0 dB line is ฯ‰, then

a.

ฯ‰ = K/J

b.

ฯ‰² = K/J

c.

ฯ‰³ = K/J

d.

ฯ‰โด = K/J

Discuss
Answer: (b).ฯ‰² = K/J
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