Electrical Machines In a DC machine, the angle between the stator and rotor fields is 0o. 180o. 90o. dependent upon the load. 0o. 180o. 90o. dependent upon the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature coil is short circuited by brushes when it lies in any of above positions. in none of above positions. along neutral axis. along field axis. in any of above positions. in none of above positions. along neutral axis. along field axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is S.Ns Ns Zero Nr S.Ns Ns Zero Nr ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When flux density is constant in a transformer, hysteresis loss varies as f² f V V² f² f V V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the air gap of IM is increased, ____________ will increase. air gap flux. speed. power factor. magnetizing current. air gap flux. speed. power factor. magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer the magnetic coupling between the primary and secondary winding can be increased by increasing the number of turns. using soft material for winding. using transformer oil of better quality. using the magnetic core of low reluctance. increasing the number of turns. using soft material for winding. using transformer oil of better quality. using the magnetic core of low reluctance. ANSWER DOWNLOAD EXAMIANS APP
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