Controller - Control System Multiple Choice Questions and Answers

36.  Which of the following is the input to a controller?

   A. Servo signal

   B. Desired variable value

   C. Error signal

   D. Sensed signal

37.  The on-off controller is a..........system

   A. Digital

   B. Linear

   C. Non-linear

   D. Discontinuous

38.  Proportional band of a controller is expressed as

   A. Percentage

   B. Range of control variable

   C. Ratio

   D. Gain

39.  A controller is basically a.........

   A. Sensor

   B. Comparator

   C. Amplifier

   D. Clipper

40.  Drag type motors generally have

   A. Low inertia

   B. High inertia

   C. Low starting torque

   D. Low damping

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