Numerical - Gain margin in dB for given closed loop system point

Q.  If a Nyquist plot of G (jω) H (jω) for a closed loop system passes through (-2, j0) point in GH plane, what would be the value of gain margin of the system in dB?
- Published on 09 Oct 15

a. 0 dB
b. 2.0201 dB
c. 4 dB
d. 6.0205 dB

ANSWER: 6.0205 dB
 

    Discussion

  • sanal   -Posted on 28 Sep 17
    expl

Post your comment / Share knowledge


Enter the code shown above:
 
(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)