If a system has an open loop transfer function 1-s / 1+s, then the gain of the system at frequency of 1 rad/s will be
A. 1
B. 1/2
C. Zero
D. -1
Answer:D
If a system has an open loop transfer function 1-s / 1+s, then the gain of the system at frequency of 1 rad/s will be
A. 1 B. 1/2 C. Zero D. -1
Explanation: The system is all pass system and the gain of the system at frequency of 1 rad/sec.