Explore topic-wise MCQs in Control Systems.

This section includes 4 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.

In case of DC servomotor the back-emf is equivalent to an electric friction which tends to :

A. tImprove stability of the motor
B. tSlowly decrease stability of the motor
C. tVary rapidly decrease stability of the motor
D. tHave no effect on stability
Answer» B. tSlowly decrease stability of the motor
Discussion
2.

Assertion (A): In the error detector configuration using a synchro transmitter and synchro control transformer, the latter is connected to the error amplifier.
Reason (R): Synchro control transformer has almost a uniform reluctance path between the rotor and the stator.

A. tBoth A and R are true and R is correct explanation of A
B. tBoth A and R are true and R is not correct Explanation of A
C. tA is True and R is false
D. tA is False and R is true
Answer» D. tA is False and R is true
Discussion
3.

Assertion (A): In a shunt regulator, the control element is connected in shunt with the load to achieve constant output voltage.
Reason (R): The impedance of the control element varies to keep the total current flowing through the load and the control element constant.

A. tBoth A and R are true and R is correct explanation of A
B. tBoth A and R are true and R is not correct Explanation of A
C. tA is True and R is false
D. tA is False and R is true
Answer» D. tA is False and R is true
Discussion
4.

Assertion (A): The stator winding of a control transformer has higher impedance per phase
Reason (R): The rotor of control transformer is cylindrical in shape.

A. tBoth A and R are true and R is correct explanation of A
B. tBoth A and R are true and R is not correct Explanation of A
C. tA is True and R is false
D. tA is False and R is true
Answer» C. tA is True and R is false
Discussion