Automatic Control Systems The relative stability of a system is given by Either (a) or (b) Phase margin alone Gain margin alone Both phase and gain margins Either (a) or (b) Phase margin alone Gain margin alone Both phase and gain margins ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems A system is highly oscillatory if Gain margin is high Gain margin is close to 1 Gain margin is high and phase margin is 180° Gain margin is close to 1 or phase margin is zero Gain margin is high Gain margin is close to 1 Gain margin is high and phase margin is 180° Gain margin is close to 1 or phase margin is zero ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems In a simple on-off controller with differential gap, the magnitude of differential gap determines The life of controller Neither (a) nor (b) Both (a) and (b) The level of accuracy The life of controller Neither (a) nor (b) Both (a) and (b) The level of accuracy ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems Which dc servomotor requires strongest permanent magnet? Slotted armature Either A or B Surface wound armature Surface wound with stationary rotor Slotted armature Either A or B Surface wound armature Surface wound with stationary rotor ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions. False True False True ANSWER DOWNLOAD EXAMIANS APP
Automatic Control Systems In the field controlled motor the entire damping comes from Back emf Motor friction and load Armature resistance Field resistance Back emf Motor friction and load Armature resistance Field resistance ANSWER DOWNLOAD EXAMIANS APP