Frequency Domain Analysis » Exercise - 123. The phase margin of a system is 0˚. It represents a : (a) stable system (b) unstable system (c) conditionally stable system (d) marginally stable system
Frequency Domain Analysis » Exercise - 125. At the phase crossover frequency, ω =5 rad/s,│G(jω)H(j ω) │= 10 dB. The system is : (a) stable (b) unstable (c) conditionally stable (d) cannot be predicted
Frequency Domain Analysis » Exercise - 114. Large values of gain margin and phase margin result in : (a) a fast system (b) an unstable system (c) a sluggish system (d) an underdamped system
Frequency Domain Analysis » Exercise - 1 16. For a stable system : (a) gain margin must be positive but phase margin can be positive or negative (b) phase margin must be positive but gain margin can be positive or negative (c) both gain margin and phase margin must be positive (d) one of them must be zero