Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will none of these. Decrease.d remains same. increase. none of these. Decrease.d remains same. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The maximum power developed in cylindrical synchronous machine is occurs at a load angle of less than 90o. 0o. 90o. Greater than 90o. less than 90o. 0o. 90o. Greater than 90o. 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 The armature of DC motor is laminated to reduce the mass. to reduce the inductor. to reduce the hysteresis loss. to reduce the eddy current loss. to reduce the mass. to reduce the inductor. to reduce the hysteresis loss. to reduce the eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum efficiency will occur, when copper loss is_______to iron loss? equal to greater than less than any of the above equal to greater than less than any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/S 1-S S 1/(1-S) 1/S 1-S S 1/(1-S) ANSWER DOWNLOAD EXAMIANS APP
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