Control Theory
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A question pack on dynamic systems and controls.
This content is licensed under the Creative Commons Attribution 3.0 Unported License.
Compensation control techniques use which of the following?
Phase lead
Phase lag
Integration
All of the above
Compensation control techniques use which of the following?
Phase lead
Phase lag
Integration
All of the above
Controller design using frequency is based on which of the following?
Open‑loop time response
Closed‑loop time response
Open‑loop frequency response
Closed‑loop frequency response
If the error signal is ______________, then the output of the integrator stays constant.
0.1
1
2
0
In proportional control systems, the measured output is ______________ the input signal to form the error signal.
Added to
Subtracted from
Multiplied with
Divided by
In proportional control systems, if the sensor gain is ______________, then the output is equal to input.
1
0.1
2
0.01
Lead compensation is equivalent to ______________ control?
P
D
PD
PID
Many open‑loop systems have high magnitude (gain) at natural frequency equal to ______________.
Zero
One
Infinity
Ten
Many open‑loop systems have low magnitude (gain) at natural frequency equal to ______________.
Zero
One
Infinity
Ten
The primary objective of lead compensation is to increase ______________ near crossover frequency?
Phase margin
Gain margin
Natural frequency
Overshoot
In integral control, which of the following is proportional to the integral of the error?
Input
Output
Control effort
Response
In proportional control systems, the control effort is proportional to which of the following signals?
Input
Measured input
Output
Error
Pre‑filters are generally used to cancel which of the following?
Zeros
Poles
Gain
Phase
The accuracy of proportional control is determined by which of the following?
Steady state error
Phase margin
Open loop gain
Closed loop gain
Control systems generally consist of which of the following?
Input
System
Output
All of the above
For pole‑zero cancellation which of the following candidate controllers is generally used?
P controller
PD controller
PI controller
PID controller
For strategic zero placement, which of the following candidate controllers is generally used?
P controller
PD controller
PI controller
PID controller
Which of the following regarding robust control systems is false?
Robust control systems have high sensitivities.
Robust control systems have low sensitivities.
Robust control is stable over wide range of parameter variations.
All of the above
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