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The critical value of gain for a system is 40 and gain margin is 6dB. The system is operating at a gain of:

The critical value of gain for a system is 40 and gain margin is 6dB. The system is operating at a gain of: Correct Answer 20

Gm (dB) = 20log⁡GM here Gm = 6 dB By simplifying GM = 1.99526 = 2 (approx) Given K (marginal) = 40 As we know, GM = K (marginal)/K (desired) K desired = 40/2 = 20.

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