CONTROL SYSTEM MCQs SET 24

CONTROL SYSTEM MCQs SET 24

1. In an automatic control system which of the following elements is not used?
a) Error detector
b) Final control element
c) Sensor
d) Oscillator
 

Answer: d
2. In a control system the output of the controller is given to
a) Final control element
b) Amplifier
c) Comparator
d) Sensor
 

Answer: a
3. A controller, essentially, is a
a) Sensor
b) Clipper
c) Comparator
d) Amplifier
 

Answer: c

4. Which of the following is the input to a controller?
a) Servo signal
b) Desired variable value
c) Error signal
d) Sensed signal
 

Answer: c

5. The on-off controller is a _____ system.
a) Digital
b) Linear
c) Non-linear
d) Discontinuous
 

Answer: d

6. The capacitance, in force-current analogy, is analogous to
a) Momentum
b) Velocity
c) Displacement
d) Mass
 

Answer: d
7. The temperature, under thermal and electrical system analogy, is considered analogous to
a) Voltage
b) Current
c) Capacitance
d) Charge
 

Answer: a

8. In electrical-pneumatic system analogy the current is considered analogous to
a) Velocity
b) Pressure
c) Air flow
d) Air flow rate
 

Answer: d

9. The use of feedback element in the feedback loop is:
a) It converts the output variable ‘c’ to another suitable feedback variable ‘b’ to compare with the input command signal.
b) It is the actuating element
c) To increase the stability
d) None of the mentioned

Answer: a

10. The major components of a controller are:
a) Control element
b) Error detector and control element
c) Feedback element
d) Error detector and feedback element
 

Answer: b