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 34 of 48

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Q331.
Assertion (A): Inverse Laplace transform can be found from P(s) by inversion integral.

Reason (R): The function f(t) is assumed to be zero for t < 0.

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
Q332.
Assertion (A): Derivative control action is also called rate control and has an anticipatory character.

Reason (R): Derivative control amplifies noise signals.

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
Q333.
Assertion (A): When a PID controller is added to a system, the peak overshoot to step input cannot be determined easily.

Reason (R): Use of PID controller introduces a zero in the forward 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: (a).Both A and R are correct and R is correct explanation of A
Q334.
The slope of log magnitude asymptote changes by - 40 dB/ decade at a certain frequency and the error between asymptote and actual curve is - 6 dB. This means that

a.

a double pole is present

b.

a pair of complex conjugate poles is present

c.

either a double pole or a pair of complex conjugate poles is present

d.

either a pole or zero at that frequency is present

Discuss
Answer: (a).a double pole is present
Q335.
Friction forces acts in a direction

a.

opposite to that of velocity

b.

same as that of velocity

c.

at right angle to that of velocity

d.

partly opposite and partly at right angle to the direction of velocity

Discuss
Answer: (a).opposite to that of velocity
Q336.
For a second order system delay time td is the time required to reach

a.

half the final value for the very first time

b.

the final value for the very first time

c.

90% of the final value for the very first time

d.

none of the above

Discuss
Answer: (a).half the final value for the very first time
Q337.
Coulomb friction is

a.

the force of sliding friction between dry surfaces

b.

the force of friction between moving surfaces separated by viscous fluid

c.

the force required to initiate motion between two contacting surfaces

d.

all of the above

Discuss
Answer: (a).the force of sliding friction between dry surfaces
Q338.
The damping ratio of a pair of complex poles when expressed in terms of angle ฮธ measured from jฯ‰ axis equal to

a.

sin ฮธ

b.

cos ฮธ

c.

tan ฮธ

d.

cot ฮธ

Discuss
Answer: (a).sin ฮธ
Q339.
The slope of log magnitude curve changes by - 40 dB/decade at a certain frequency and the error between asymptote and actual curve is positive. This means that

a.

a double pole is present

b.

a pair of complex conjugate poles is present

c.

either (a) or (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).a pair of complex conjugate poles is present
Q340.
A system has high gain and phase margin. The system is

a.

very stable

b.

sluggish

c.

very stable and sluggish

d.

oscillatory

Discuss
Answer: (c).very stable and sluggish
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