Electrical Machines In a DC generator, the ripples in the direct emf generated are reduced by employing equalizer rings. commutator with large number of segments. carbon brushes. graphite brushes. equalizer rings. commutator with large number of segments. carbon brushes. graphite brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is also called as-----------? constant torque control constant power control constant voltage control constant current control constant torque control constant power control constant voltage control constant current control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has almost constant speed over their full load range? Shunt. none of these. Series. Compound (cummolative). Shunt. none of these. Series. Compound (cummolative). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a single phase capacitor start induction motor which of the following is valid? Rotation can be changed by interchanging supply terminals. Direction of rotation cannot be changed. Rotation can be changed by reversing main winding terminals. None of these. Rotation can be changed by interchanging supply terminals. Direction of rotation cannot be changed. Rotation can be changed by reversing main winding terminals. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High starting torque and low starting current is the advantage of squirrel cage induction motor. stepper motor. hysteresis motor. slip ring induction motor. squirrel cage induction motor. stepper motor. hysteresis motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following rotor requires damper winding? Both type rotor. Cylindrical rotor. None of these Salient pole rotor. Both type rotor. Cylindrical rotor. None of these Salient pole rotor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS