A system has poles at 0.01 Hz, 1 Hz and 80Hz, zeroes at 5Hz, 100Hz and 200Hz. The approximate phase of the system response at 20 Hz is :

by
Question:

A system has poles at 0.01 Hz, 1 Hz and 80Hz, zeroes at 5Hz, 100Hz and 200Hz. The approximate phase of the system response at 20 Hz is :

A.

-90°

B.

0° c) 90°

C.

d) -180°

Answer» a. -90°

Note: The above multiple-choice question is for all general and Competitive Exams in India.