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 zero 40 V 20 V 50 V zero 40 V 20 V 50 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at unity power factor. lagging power factor. any of the above. leading power factor. unity power factor. lagging power factor. any of the above. leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotor resistance speed control is used in squirrel cage induction motor. dc shunt motor. synchronous motor. slip ring induction motor. squirrel cage induction motor. dc shunt motor. synchronous motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A crusher is equipped with Synchronous motor. Reluctance motor. Slip ring induction motor. DC shunt motor. Synchronous motor. Reluctance motor. Slip ring induction motor. DC shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of a DC motor is laminated to reduce eddy current loss. friction and windage loss. copper loss. hysteresis loss. eddy current loss. friction and windage loss. copper loss. hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A series motor is efficiently suitable for low starting torque operation. none of these. constant speed operation. high starting torque operation. low starting torque operation. none of these. constant speed operation. high starting torque operation. ANSWER DOWNLOAD EXAMIANS APP
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