1.

The number and direction of encirclements around the point \(\rm −1 + j0\) in the complex plane by the Nyquist plot of \({\rm{G}}\left( {\rm{s}} \right) = \frac{{1 - {\rm{s}}}}{{4 + 2{\rm{s}}}}\) is

A. zero.
B. one, anti-clockwise.
C. one, clockwise.
D. two, clockwise.
Answer» B. one, anti-clockwise.


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