Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? GNA either GNA or MNA None of these MNA GNA either GNA or MNA None of these MNA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a polyphase induction motor helps to reduce the chance of cogging. reduce the chance of crawling. reduce the magnetizing current. increase the starting torque. reduce the chance of cogging. reduce the chance of crawling. reduce the magnetizing current. increase the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit test on transformer gives hysteresis loss eddy current loss copper loss both 1and 2 hysteresis loss eddy current loss copper loss both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, the frequency of a voltage at the secondary is any of the above. greater than the primary. less than primary. equal to primary. any of the above. greater than the primary. less than primary. equal to primary. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Variation in speed by ward-Leonard control of DC motors occurs due to variation in Armature current. Field excitaion. Supply voltage. Armature voltage. Armature current. Field excitaion. Supply voltage. Armature voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following generators negative voltage regulation can occur? shunt generator over compound generator both B and C series generators shunt generator over compound generator both B and C series generators ANSWER DOWNLOAD EXAMIANS APP
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