Automatic Control Systems The permanent magnet field system of brushless dc servo- motor is generally on Partly on stator and partly on rotor Rotor Either (a) or (b) Stator Partly on stator and partly on rotor Rotor Either (a) or (b) Stator ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A conditionally stable system is stable for the value of gain between two critical values. It is unstable if None of these The gain is increased beyond upper critical value Both A and B The gain is decreased below lower critical value None of these The gain is increased beyond upper critical value Both A and B The gain is decreased below lower critical value 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 (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 It is symmetric about -180° M loci are centred about (0 dB, -180°) point (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 It is symmetric about -180° ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems If any term in the first column of a Routh array becomes zero, then Routh criterion can be used by substituting a big positive number for zero and completing the array Routh criterion cannot be used to determine stability Routh criterion can be used by substituting a small positive number for zero and completing the array Routh criterion can be used by substituting a small negative number for zero and complet-ing the array Routh criterion can be used by substituting a big positive number for zero and completing the array Routh criterion cannot be used to determine stability Routh criterion can be used by substituting a small positive number for zero and completing the array Routh criterion can be used by substituting a small negative number for zero and complet-ing the array ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Bandwidth is proportional to speed of response. True False True False ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Magnetic amplifier is used for Power amplification Current amplification Frequency amplification Voltage amplification Power amplification Current amplification Frequency amplification Voltage amplification ANSWER DOWNLOAD EXAMIANS APP
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