1.

For a Phase Locked Loop system, the open-loop transfer function is\(G(s) = \frac {1000}{s\left(\frac {s}{1192} + 1\right)}\)The phase margin is 50° and the crossover frequency is approximately 1000 rad / s. A time delay is introduced in the phase detector reducing the phase margin to 40°. The maximum permissible time delay (in seconds) is:

A. 10-4
B. 0.174
C. 1.192 × 10-3
D. 0.174 × 10-3
Answer» E.


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