Explore topic-wise MCQs in Control Systems.

This section includes 15 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.

Assertion (A): Lead compensation is used to improve the system’s stabilityReason (R): Lead compensation achieves the desired result through the merits of its phase lead contribution.

A. Both assertion and reason are true and R is correct explanation of A
B. Both A and R 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 true but R is not correct explanation of A
Discussion
2.

A plant is controlled by a proportional controller, if time delay element is introduced in the loop its:

A. Phase margin remains the same
B. Phase margin increases
C. Phase margin decreases
D. Gain margin increases
Answer» D. Gain margin increases
Discussion
3.

Assertion (A): A derivative controller produces a control action for constant error only.Reason (R): The PD controller increases the damping and reduces the peak overshoot.

A. Both assertion and reason are true and R is correct explanation of A
B. Both A and R 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» E.
Discussion
4.

Assertion (A): A PI controller increases the order of the system by units but decreases the steady state error.Reason (R): A PI controller introduces a pole at either the origin or at a desired points on the negative real axis.

A. Both assertion and reason are true and R is correct explanation of A
B. Both A and R 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 true but R is not correct explanation of A
Discussion
5.

Assertion (A): Feedback compensation is preferred to series compensation.Reason (R): No amplification is required as the energy flows from higher to lower levels.

A. Both assertion and reason are true and R is correct explanation of A
B. Both A and R 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 true but R is not correct explanation of A
Discussion
6.

A_PLANT_IS_CONTROLLED_BY_A_PROPORTIONAL_CONTROLLER,_IF_TIME_DELAY_ELEMENT_IS_INTRODUCED_IN_THE_LOOP_ITS:?$

A. Phase margin remains the same
B. Phase margin increases
C. Phase margin decreases
D. Gain margin increases
Answer» D. Gain margin increases
Discussion
7.

Assertion_(A):_Lead_compensation_is_used_to_improve_the_system’s_stability$#

A. : Lead compensation achieves the desired result through the merits of its phase lead contribution.
B. Both assertion and reason are true and R is correct explanation of A
C. Both A and R true but R is not correct explanation of A
D. A is true but R is false
Answer» B. Both assertion and reason are true and R is correct explanation of A
Discussion
8.

Assertion (A): A derivative controller produces a control action for constant error only?

A. : The PD controller increases the damping and reduces the peak overshoot.
B. Both assertion and reason are true and R is correct explanation of A
C. Both A and R true but R is not correct explanation of A
D. A is true but R is false
Answer» E.
Discussion
9.

Assertion (A): A PI controller increases the order of the system by units but decreases the steady state error.

A. : A PI controller introduces a pole at either the origin or at a desired points on the negative real axis.
B. Both assertion and reason are true and R is correct explanation of A
C. Both A and R true but R is not correct explanation of A
D. A is true but R is false
Answer» B. Both assertion and reason are true and R is correct explanation of A
Discussion
10.

Assertion (A): Feedback compensation is preferred to series compensation.

A. : No amplification is required as the energy flows from higher to lower levels.
B. Both assertion and reason are true and R is correct explanation of A
C. Both A and R true but R is not correct explanation of A
D. A is true but R is false
Answer» B. Both assertion and reason are true and R is correct explanation of A
Discussion
11.

Pressure error can be measured by which of the following?

A. Differential bellows and strain gauge
B. Selsyn
C. Strain gauge
D. Strain gauge and potentiometer
Answer» B. Selsyn
Discussion
12.

In pneumatic control systems the control valve used as final control element converts

A. Pressure signal to electric signal
B. Pressure signal to position change
C. Electric signal to pressure signal
D. Position change to pressure signal
Answer» C. Electric signal to pressure signal
Discussion
13.

Which of the following is the definition of proportional band of a controller?

A. The range of air output as measured variable varies from maximum to minimum
B. The range of measured variables from set value
C. The range of measured variables through which the air output changes from maximum to minimum
D. All of the mentioned
Answer» D. All of the mentioned
Discussion
14.

_____________ is not a final control element.

A. Control valve
B. Potentiometer
C. Electro-pneumatic converter
D. Servomotor
Answer» C. Electro-pneumatic converter
Discussion
15.

Which of the following can be measured by the use of a tacho-generator?

A. Acceleration
B. Speed
C. Speed and acceleration
D. Displacement
Answer» C. Speed and acceleration
Discussion