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PID Controller Quiz | PID Controller Objective Type Questions and Answers

Questions
21 Lag compensation leads to:
A Attenuation
B Second order
C Increases damping factor
D Increases bandwidth

Answer: Attenuation
22 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: Reduction in steady state error
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23 Derivative output compensation:
A Reduction is settling time
B Increase in damping constant
C Improvement in transient response
D Reduction in steady state error

Answer: Reduction is settling time
24 Addition of zero at origin:
A Increase in damping constant
B Reduction in steady state error
C Improvement in transient response
D Reduction is settling time

Answer: Improvement in transient response
25 Phase lag controller:
A Reduction in steady state error
B Increase in damping constant
C Improvement in transient response
D Reduction is settling time

Answer: Reduction in steady state error
26 The input of a controller is
A Error signal
B Signal of fixed amplitude not dependent on desired variable value
C Desired variable value
D Sensed signal

Answer: Error signal
27 Process variable filtering should be used:
A to dampen noise
B only on integrating processes
C to improve response time
D only on self-regulating processes

Answer: to dampen noise
28 Fast, self-regulating processes typically respond well to aggressive control action.
A Reset
B Gain
C Nonlinear
D Proportional

Answer: Reset
29 A condition where integral control action drives the output of a controller into saturation is called:
A wind-up
B repeat
C self-bias
D noise

Answer: wind-up
30 A proportional band setting of 175% is equivalent to a gain setting of .
A 1.32
B 0.571
C 175
D 1.75

Answer: 0.571
31 Reset control action is often expressed in units of:
A time constant ratio (unitless)
B repeats per minute
C percent
D minutes

Answer: repeats per minute
32 “Quarter-wave damping” may be described as:
A a condition of good control where oscillations quickly subside
B a condition of excellent control where there are no oscillations
C a condition of good control where PV approaches SP without overshoot
D a condition of poor control where the transmitter is damped by 25%

Answer: a condition of good control where oscillations quickly subside
33 The reciprocal of proportional band is called:
A Gain
B Minutes per repeat
C Percent
D None of the above

Answer: Gain
34 The integral control:
A Decreases the damping coefficient
B Increases the steady state error
C Increases the noise and stability
D Decreases the steady state error

Answer: Increases the steady state error

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