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 - 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 - 1 17. At the phase crossover frequency, ω =10 rad/s,│G(j ω)H(j ω) │= 15 dB. Its gain margin : (a) 15 dB (b) 0 dB (c) -15 dB (d) cannot be predicted
Frequency Domain Analysis » Exercise - 1 1. The magnitude-frequency response of a control system is shown in the figure. The value of ω1 and ω2 are respectively : (a) 10 and 200 (b) 20 and 200 (c) 20 and 400 (d) 100 and 400
Frequency Domain Analysis » Exercise - 111. The gain margin of a system is 0 dB. It represent a : (a) stable system (b) unstable system (c) conditionally stable system (d) marginally stable system