Automatic Control Systems If any term in the first column of a Routh array becomes zero, then 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 big 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 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 big 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 A lag compensator Improves steady state behavior and preserves the transient response of the system Speeds up the transient response of the system Improves steady state behavior of the system Improves steady state behavior and speeds up the transient response of the system Improves steady state behavior and preserves the transient response of the system Speeds up the transient response of the system Improves steady state behavior of the system Improves steady state behavior and speeds up the transient response of the system ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems In the field controlled motor the entire damping comes from Field resistance Armature resistance Back emf Motor friction and load Field resistance Armature resistance Back emf Motor friction and load ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot. False True False True ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which of the following features is not associated with Nichols chart? 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) It is symmetric about -180° M loci are centred about (0 dB, -180°) point 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) It is symmetric about -180° M loci are centred about (0 dB, -180°) point ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems For any transfer function, the constant phase angle loci are A family of circles Neither (a) nor (b) Either (a) or (b) A family of straight lines A family of circles Neither (a) nor (b) Either (a) or (b) A family of straight lines ANSWER DOWNLOAD EXAMIANS APP
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