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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. | |