Explore topic-wise MCQs in Control Systems.

This section includes 14 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.

Consider the following statements relating to synchro’s:1. The rotor of the control transformer is either disc shaped2. The rotor of the transmitter is so constructed as to have a low magnetic reluctance3. Transmitter and control transformer pair is used as an error detectorWhich of these statements are correct?

A. 1,2 and3
B. 1 and 2
C. 2 and3
D. 1 and 3
Answer» D. 1 and 3
Discussion
2.

For two-phase AC servomotor, if the rotor’s resistance and reactance are respectively R and X, its length and diameter are respectively L and D then,

A. X/R and L/D are both small
B. X/R is large but L/D is small
C. X/R is small but L/D is large
D. X/R and L/D are both large
Answer» D. X/R and L/D are both large
Discussion
3.

Assertion (A): Transfer function approach has limitation that it reveals only the system output for a input and provides no information regarding the internal state of the system.Reason (R): There may be situations where the output of a system is stable and yet some of the system elements may have a tendency to exceed their specified ratings.

A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is False
D. A is False but R is True
Answer» B. Both A and R are true but R is not correct explanation of A
Discussion
4.

System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial conditiona) C(zI-A)-1B+Db) C(zI-A)-1c) (zI-A)-1zd) (zI-

A. C(zI-A)-1B+D
B. C(zI-A)-1
C. (zI-A)-1z
D. (zI-A)-1
Answer» B. C(zI-A)-1
Discussion
5.

The transfer function for the state representation of the continuous time LTI system:dq(t)/dt=Aq(t)+Bx(t)Y(t)=Cq(t)+Dx(t)is given by:a) C(sI-A)-1B+Db) B(sI-A)-1B+Dc) C(sI-A)-1B+Ad) D(sI-

A. C(sI-A)-1B+D
B. B(sI-A)-1B+D
C. C(sI-A)-1B+A
D. D(sI-A)-1B+C
Answer» B. B(sI-A)-1B+D
Discussion
6.

AMPLIFIER:?$

A. Armature controlled FHP DC motor
B. A pair of synchronous transmitter and control transformer
C. Tach generator
D. Amplidyne
Answer» E.
Discussion
7.

Servomotor?

A. Armature controlled FHP DC motor
B. A pair of synchronous transmitter and control transformer
C. Tach generator
D. Amplidyne
Answer» C. Tach generator
Discussion
8.

Error detector?

A. Armature controlled FHP DC motor
B. A pair of synchronous transmitter and control transformer
C. Tach generator
D. Amplidyne
Answer» B. A pair of synchronous transmitter and control transformer
Discussion
9.

For two-phase AC servomotor, if the rotor’s resistance and reactance are respectively R and X, its length and diameter are respectively L and D then,$

A. X/R and L/D are both small
B. X/R is large but L/D is small
C. X/R is small but L/D is large
D. X/R and L/D are both large
Answer» D. X/R and L/D are both large
Discussion
10.

When human being tries to approach an object, his brain acts as,

A. An error measuring device
B. A controller
C. An actuator
D. An amplifier
Answer» C. An actuator
Discussion
11.

Assertion (A): Transfer function approach has limitation that it reveals only the system output for a input and provides no information regarding the internal state of the system.

A. : There may be situations where the output of a system is stable and yet some of the system elements may have a tendency to exceed their specified ratings.
B. Both A and R are true and R is correct explanation of A
C. Both A and R are true but R is not correct explanation of A
D. A is true but R is False
Answer» B. Both A and R are true and R is correct explanation of A
Discussion
12.

State space analysis is applicable for non-linear systems and for multiple input and output systems.

A. True
B. False
Answer» B. False
Discussion
13.

System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial condition

A. C(zI-A)<sup>-1</sup>B+D
B. C(zI-A)<sup>-1</sup>
C. (zI-A)<sup>-1</sup>z
D. (zI-A)<sup>-1</sup>
Answer» B. C(zI-A)<sup>-1</sup>
Discussion
14.

The transfer function for the state representation of the continuous time LTI system:

A. /dt=Aq(t)+Bx(t)
B. =Cq(t)+Dx(t)
C.
Answer» B. =Cq(t)+Dx(t)
Discussion