The phase angle of the system, G(s) =s+5/s<sup>2</sup>+4s+9, varies between :
A. 0° and 90°
B. 0° and -90°
C. 0° and -180°
D. -90° and -180°
Answer:A
The phase angle of the system, G(s) =s+5/s<sup>2</sup>+4s+9, varies between :
A. 0° and 90° B. 0° and -90° C. 0° and -180° D. -90° and -180°
Explanation: As it is the type 0 system so the phase angle can be 0° and 90°.