Automatic Control Systems

Q1: For type 2 system, the magnitude and phase angle of the term (jω)2 in the denominator, at ω = 0, are respectively

A 0 and - 90°

B 0 and + 90°

C infinity and - 180°

D infinity and + 180°

ANS:C - infinity and - 180°

If ω = 0, has a magnitude of infinity and phase angle -180°.



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