A plant is controlled by a proportional controller, if time delay element is introduced in the loop its:
A.	Phase margin remains the same
B.	Phase margin increases
C.	Phase margin decreases
D.	Gain margin increases
Answer:C
A plant is controlled by a proportional controller, if time delay element is introduced in the loop its:
A.	Phase margin remains the same B.	Phase margin increases C.	Phase margin decreases D.	Gain margin increases