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 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 cannot be used to determine stability 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 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 big positive number for zero and completing the array ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems For any transfer function, the constant phase angle loci are Neither (a) nor (b) Either (a) or (b) A family of circles A family of straight lines Neither (a) nor (b) Either (a) or (b) A family of circles A family of straight lines ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems The effect of adding poles and zeros can be determined quickly by Nyquist plot Nichols chart Root locus Bode plot Nyquist plot Nichols chart Root locus Bode plot ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Nyquist stability criterion uses open loop frequency response characteristics. False True False True ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems The permanent magnet field system of brushless dc servo- motor is generally on Partly on stator and partly on rotor Stator Either (a) or (b) Rotor Partly on stator and partly on rotor Stator Either (a) or (b) Rotor ANSWER DOWNLOAD EXAMIANS APP
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 3 and 4 All 1, 2 and 3 1 and 2 3 and 4 All 1, 2 and 3 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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