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.
A negative feedback system has G(s) = 1/(s+1) and H(s) = K/s(s+2). The closed loop system is stable for

a.

K > 20

b.

15 < K < 19

c.

8 โ‰ค K โ‰ค 14

d.

K < 6

Discuss
Answer: (d).K < 6
Q152.
Mechanical impedance is the ratio of

a.

rms force to rms velocity

b.

rms force to rms displacement

c.

rms velocity to rms displacement

d.

none of the above

Discuss
Answer: (a).rms force to rms velocity
Q153.
Whether a linear system is stable or unstable that it

a.

is a property of the system only

b.

depends on the input function only

c.

both (a) and (b)

d.

either (a) or (b)

Discuss
Answer: (a).is a property of the system only
Q154.
A lag compensator is essentially a

a.

low pass filter

b.

high pass filter

c.

band pass filter

d.

either (a) or (b)

Discuss
Answer: (a).low pass filter
Q155.
Stepper motors find applications in

a.

X-Y plotters

b.

numerically controlled machining equipment

c.

printers

d.

all of the above

Discuss
Answer: (d).all of the above
Q156.
For type 2 system, the magnitude and phase angle of the term (jฯ‰)² in the denominator, at ฯ‰ = 0, are respectively

a.

0 and - 90°

b.

0 and + 90°

c.

infinity and - 180°

d.

infinity and + 180°

Discuss
Answer: (c).infinity and - 180°
Q157.
In an integral controller

a.

the output is proportional to input

b.

the rate of change of output is proportional to input

c.

the output is proportional to rate of change of input

d.

none of the above

Discuss
Answer: (b).the rate of change of output is proportional to input
Q158.
The phase margin and damping ratio have no relation.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q159.
For the transport lag G(jฯ‰) = e^(-jฯ‰T), the magnitude is always equal to

a.

0

b.

1

c.

10

d.

0.5

Discuss
Answer: (b).1
Q160.
The log magnitude curve for a constant gain K is a

a.

horizontal straight line

b.

horizontal straight line of magnitude 20 log K decibels

c.

an inclined line having slope K

d.

an inclined line having slope -K

Discuss
Answer: (b).horizontal straight line of magnitude 20 log K decibels
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