Question: The approximate GM and PM for unity feedback system with loop transmittance (frac{e^{-0.1 s}}{s}) are respectively (a) (24 mathrm{~dB}, 84^{circ}) (b) (infty, infty) (c) (0,

The approximate GM and PM for unity feedback system with loop transmittance $\frac{e^{-0.1 s}}{s}$ are respectively
(a) $24 \mathrm{~dB}, 84^{\circ}$
(b) $\infty, \infty$
(c) $0, \infty$
(d) $\infty, 0$.

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