Explore topic-wise MCQs in Control Systems.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Control Systems knowledge and support exam preparation. Choose a topic below to get started.

1.

How many types of controllers and compensators are there respectively?

A. 4, 3
B. 3, 4
C. 4, 5
D. 5, 4
Answer» B. 3, 4
Discussion
2.

What is the need for a controller?

A. Receive control signals
B. Transmit control signals
C. Modify control signals
D. Create control signals
Answer» D. Create control signals
Discussion
3.

Actuator is the basic component of an automatic control system.

A. False
B. True
Answer» C.
Discussion
4.

For a unity feedback control system, the open loop transfer function G(s) = 10(s+2)/s2(s+1). What is the acceleration error constant?

A. Infinity
B. 5
C. 10
D. 20
Answer» E.
Discussion
5.

A performance index must offer selectivity.

A. True
B. False
Answer» B. False
Discussion
6.

The open loop transfer function for a unit feedback system is G(s) = K/s(sT+1). By what factor the amplitude gain K should be reduced so that the peak overshoot becomes 25% from 75%?

A. 75
B. 25
C. 20
D. 10
Answer» D. 10
Discussion
7.

The response of a servomechanism is 1+0.2e-60t-1.2e-10t when subjected to a unit step input. What is the damping ratio?

A. 1.21
B. 1.43
C. 1.59
D. 1.74
Answer» C. 1.59
Discussion
8.

What is the response of the feedback function with open loop transfer function G(s) = 4/s(s+5) and input is input step?

A. 1-1/3(4e-t – e-4t)
B. 1-1/2(6e-t – e-4t)
C. 1-1/3(6e-t – e-4t)
D. 1-1/2(4e-t – e4t)
Answer» B. 1-1/2(6e-t – e-4t)
Discussion
9.

What is the analogous electrical element of Frictional coefficient (B) in Force-Current Analogy for mechanical translational system?

A. Resistance
B. Conductance
C. Flux
D. Voltage
Answer» C. Flux
Discussion
10.

A unity feedback system has an open loop transfer function G(s) =25/s(s+8). What is the percentage of it’s peak overshoot?

A. 0.13%
B. 1.13%
C. 1.26%
D. 1.52%
Answer» E.
Discussion