Automatic Control Systems The relative stability of a system is given by Phase margin alone Both phase and gain margins Gain margin alone Either (a) or (b) Phase margin alone Both phase and gain margins Gain margin alone Either (a) or (b) ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which of the following features is not associated with Nichols chart? M loci are centred about (0 dB, -180°) point It is symmetric about -180° The frequency at intersection of G(j?) locus and M = +3 dB locus gives bandwidth of closed loop system (0 dB, -180°) point on Nichols chart represent critical Point (-1, 0) M loci are centred about (0 dB, -180°) point It is symmetric about -180° The frequency at intersection of G(j?) locus and M = +3 dB locus gives bandwidth of closed loop system (0 dB, -180°) point on Nichols chart represent critical Point (-1, 0) ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency. False True False True ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A system is highly oscillatory if Gain margin is close to 1 or phase margin is zero Gain margin is high and phase margin is 180° Gain margin is close to 1 Gain margin is high Gain margin is close to 1 or phase margin is zero Gain margin is high and phase margin is 180° Gain margin is close to 1 Gain margin is high ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems In a simple on-off controller with differential gap, the magnitude of differential gap determines Both (a) and (b) Neither (a) nor (b) The life of controller The level of accuracy Both (a) and (b) Neither (a) nor (b) The life of controller The level of accuracy ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A lead compensator None of these Increases the stability margin and speeds up the transient-response. Speeds up the transient response Increases the stability margin None of these Increases the stability margin and speeds up the transient-response. Speeds up the transient response Increases the stability margin ANSWER DOWNLOAD EXAMIANS APP
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