Control System Multiple Choice Questions and Answers


1.  It is speed control system output rate feedback is used to


   A. Limit the speed of motor

   B. Limit the acceleration of the motor thing

   C. Reduce the damping of the system

   D. Increase the gain margin


✔ View Answer


C. Reduce the damping of the system

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2.  The most commonly used input signal in control system is/are


   A. Step function

   B. Ramp or velocity function

   C.Accelerating function

   D. All of the above


✔ View Answer


A. Step function

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3.  What is the characteristic of a good control system?


   A. Sensitive to parameter variation

   B. Insensitive to input commands

   C. Neither sensitive to parameter variation nor sensitive to input commands

   D. Insensitive to parameter variation nor sensitive to input commands


✔ View Answer


D. Insensitive to parameter variation nor sensitive to input commands

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4.  Feedback control systems are


   A. Insensitive to both forward and feedback path parameter changes

   B. Less sensitive to feedback path parameter changes than to forward path parameter changes

   C. Less sensitive to forward path parameter changes than to feedback path parameter changes

   D. Equally sensitive to forward and feedback path parameter changes


✔ View Answer


C. Less sensitive to forward path parameter changes than to feedback path parameter changes

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5.  In a control system the use of negative feedback


   A.. Eliminates the chances of instability

   B. Increases the reliability

   C. Reduces the effects of disturbance and noise signals in the forward path

   D. Increases the influence of variations of component parametres on the system performance


✔ View Answer


C. Reduces the effects of disturbance and noise signals in the forward path

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