A plant controlled by a proportional controller. If a 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 controlled by a proportional controller. If a 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
Explanation: The introduction of a time delay element decreases both the phase and gain margin.