1
GATE ECE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Which of the following can be the pole-zero configuration of a phase-lag controller (lag compensator)?
A
GATE ECE 2017 Set 1 Control Systems - Compensators Question 17 English Option 1
B
GATE ECE 2017 Set 1 Control Systems - Compensators Question 17 English Option 2
C
GATE ECE 2017 Set 1 Control Systems - Compensators Question 17 English Option 3
D
GATE ECE 2017 Set 1 Control Systems - Compensators Question 17 English Option 4
2
GATE ECE 2017 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Which of the following statement is incorrect?
A
Lead compensator is used to reduce the settling time.
B
Lag compensator is used to reduce the steady state error.
C
Lead compensator may increase the order of a system.
D
Lag compensator always stabilizes an unstable system.
3
GATE ECE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
The transfer function of a first-order controller is given as $${G_c}(s) = {{K\left( {s + a} \right)} \over {s + b}}$$

where k, a and b are positive real numbers. The condition for this controller to act as a phase lead compensator is

A
a < b
B
a > b
C
K < ab
D
K > ab
4
GATE ECE 2009
MCQ (Single Correct Answer)
+1
-0.3
The magnitude plot of a rational transfer function G(s), with real coefficient is shown in figure. Which of the following compensators has such a magnitude plot? GATE ECE 2009 Control Systems - Compensators Question 19 English
A
Lead compensator
B
Lag compensator
C
PID controller
D
Lea-lag compensator
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