Automatic Control Systems Which of the following can be used as a rotating amplifier in a control system? 1. Amplidyne 2. Separately excited dc generator 3. Synchro 4. Self excited dc generator 1, 2 and 3 1 and 2 3 and 4 All 1, 2 and 3 1 and 2 3 and 4 All 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. True False True False ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems If the poles lie in second quadrant, damping ratio is 1 more than 1 less than 1 zero 1 more than 1 less than 1 zero ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems The effect of adding poles and zeros can be determined quickly by Bode plot Root locus Nichols chart Nyquist plot Bode plot Root locus Nichols chart Nyquist plot ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which of the following features is not associated with Nichols chart? It is symmetric about -180° (0 dB, -180°) point on Nichols chart represent critical Point (-1, 0) The frequency at intersection of G(j?) locus and M = +3 dB locus gives bandwidth of closed loop system M loci are centred about (0 dB, -180°) point It is symmetric about -180° (0 dB, -180°) point on Nichols chart represent critical Point (-1, 0) The frequency at intersection of G(j?) locus and M = +3 dB locus gives bandwidth of closed loop system M loci are centred about (0 dB, -180°) point ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Integral control action Neither (a) nor (b) Removes offset May lead to oscillatory response Both (a) and (b) Neither (a) nor (b) Removes offset May lead to oscillatory response Both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
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