Automatic Control Systems The permanent magnet field system of brushless dc servo- motor is generally on Partly on stator and partly on rotor Stator Rotor Either (a) or (b) Partly on stator and partly on rotor Stator Rotor Either (a) or (b) 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 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 can be used by substituting a small 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 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 can be used by substituting a small positive number for zero and completing the array Routh criterion cannot be used to determine stability 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 All 1, 2 and 3 3 and 4 1 and 2 All 1, 2 and 3 3 and 4 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems In force current analogue, mechanical mobility is analogous to Reactance X Conductance G Admittance Y Impedance Z Reactance X Conductance G Admittance Y Impedance Z 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 The gain is increased beyond upper critical value None of these The gain is decreased below lower critical value Both A and B The gain is increased beyond upper critical value None of these The gain is decreased below lower critical value Both A and B 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
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