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?

Related MCQs

• The critical value of gain for a system is 40 and gain margin is 6dB. The system is operating at a gain of:
• As compared to the closed loop system, an open loop system is
• Open loop system is                        stable than closed loop system
• Which of the statements are the advantages of closed loop systems over the open loop system:
• If the gain of the open loop system is doubled, the gain of the system is :
• On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend?
• For a stable closed loop system, the gain at phase crossover frequency should always be:
• If root loci plots of a particular control system do not intersect the imaginary axis at any point, then the gain margin of the system will be:
• According to Nyquist stability criterion, where should be the position of all zeros of q(s) corresponding to s-plane?
• If the gain of the system is reduced to a zero value, the roots of the system in the s- plane,