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 If the poles lie in second quadrant, damping ratio is zero 1 more than 1 less than 1 zero 1 more than 1 less than 1 ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A system is highly oscillatory if Gain margin is high Gain margin is close to 1 or phase margin is zero Gain margin is high and phase margin is 180° Gain margin is close to 1 Gain margin is high Gain margin is close to 1 or phase margin is zero Gain margin is high and phase margin is 180° Gain margin is close to 1 ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Integral control action Removes offset Both (a) and (b) May lead to oscillatory response Neither (a) nor (b) Removes offset Both (a) and (b) May lead to oscillatory response Neither (a) nor (b) 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 1, 2 and 3 1 and 2 All 3 and 4 1, 2 and 3 1 and 2 All 3 and 4 ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which dc servomotor requires strongest permanent magnet? Either A or B Slotted armature Surface wound armature Surface wound with stationary rotor Either A or B Slotted armature Surface wound armature Surface wound with stationary rotor ANSWER DOWNLOAD EXAMIANS APP
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