Automatic Control Systems - Engineering

Q1:

If Z is the number of zeros of 1 + G(s) H(s) in the right half s plane. N is the number of clockwise encircle elements of (-1 + jo) point. P is the number of poles of G(s) H(s) in right half s plane. The Nyquist stability criterion can be expressed as

A Z = N + P

B Z = P/N

C Z = N - P

D Z = PN

ANS:A - Z = N + P

No answer description is available.