Multiple Choice Questions and Answers on Tuning of PID Controllers

1. Lag-lead compensation is a:

a) Increases bandwidth

b) Attenuation

c) Increases damping factor

d) Second order

Answer: Second order

2. Derivative error compensation:

a) Improvement in transient response

b) Reduction in steady state error

c) Reduction is settling time

d) Increase in damping constant

Answer: Increase in damping constant

3. Lag compensation leads to:

a) Increases bandwidth

b) Attenuation

c) Increases damping factor

d) Second order

Answer: Attenuation

4. Derivative output compensation:

a) Improvement in transient response

b) Reduction in steady state error

c) Reduction is settling time

d) Increase in damping constant

Answer: Reduction is settling time

5. Phase lag controller:

a) Improvement in transient response

b) Reduction in steady state error

c) Reduction is settling time

d) Increase in damping constant

Answer: Reduction in steady state error

6. Rate compensation :

a) Increases bandwidth

b) Attenuation

c) Increases damping factor

d) Second order

Answer: Increases damping 

7. Lead compensation leads to:

a) Increases bandwidth

b) Attenuation

c) Increases damping factor

d) Second order

Answer: Increases bandwidth

8. The input of a controller is

a) Sensed signal

b) Error signal

c) Desired variable value

d) Signal of fixed amplitude not dependent on desired variable value

Answer: Error signal

9. factorAddition of zero at origin:

a) Improvement in transient response

b) Reduction in steady state error

c) Reduction is settling time

d) Increase in damping constant

Answer: Improvement in transient response

10. Negative exponential term in the equation of the transfer function causes the transportation lag.

a) True

b) False

Answer: True