Electrical Machines What is the phase difference between two windings of A.C servomotor ? 120°. 90°. 30°. 60°. 120°. 90°. 30°. 60°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is 20 V 40 V 50 V zero 20 V 40 V 50 V zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard system for controlling the speed of a DC motor is used where All of above. The speed in both the direction is required. The accuracy in speed control is required. Very fine speed control over the whole range from zero to normal speed is required. All of above. The speed in both the direction is required. The accuracy in speed control is required. Very fine speed control over the whole range from zero to normal speed is required. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of single phase induction motor is having the highest power factor at full load ? Split phase type. Shaded pole type. Capacitor run type. Capacitor start. Split phase type. Shaded pole type. Capacitor run type. Capacitor start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Damper winding is used to suppress the hunting. increase the load current. both 1 and 2. decrease the load current. suppress the hunting. increase the load current. both 1 and 2. decrease the load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An alternator is feeding an infinite busbar. Its prime mover is suddenly shutdown. The alternator will come to stand still. start working as induction motor. continue to work as alternator but the direction of rotation will reverse. continue to work as synchronous motor with same direction of rotation. come to stand still. start working as induction motor. continue to work as alternator but the direction of rotation will reverse. continue to work as synchronous motor with same direction of rotation. ANSWER DOWNLOAD EXAMIANS APP
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