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The Nyquist plot of a open loop transfer function G (jω) H(jω) of a system encloses the (– 1, j0) point, the gain margin of the system is—
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- less than zero
- zero
- greater than zero
- infinity
- less than zero
Correct Option: A
Gain margin of the system for which Nyquist plot of a loop transfer function G(jω) H(jω) encloses (– 1 + j0) point, makes the system unstable. Hence obviously the gain margin of the systems less than zero.
