Electrical Machines A large series motor is never started without some mechanical on it because otherwise it will Develop excessive speed and damage itself. Produce sparking at brushes. Open fuse or circuit breaker. Draw too much current. Develop excessive speed and damage itself. Produce sparking at brushes. Open fuse or circuit breaker. Draw too much current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low voltage rating which winding is employed to DC machine? No wave and lap winding. Wave winding. Lap winding. Both wave and lap winding. No wave and lap winding. Wave winding. Lap winding. Both wave and lap winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along quadrature axis and interpolar axis direct axis and interpolar axis direct axis and indirect axis quadrature axis and direct axis quadrature axis and interpolar axis direct axis and interpolar axis direct axis and indirect axis quadrature axis and direct axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods of speed control is not affected through stator side? Change of number of pole. Change of supply frequency. Change of supply voltage. Change of rotor resistance. Change of number of pole. Change of supply frequency. Change of supply voltage. Change of rotor resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is 8. 16. 32. 4. 8. 16. 32. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the emf generated by the armature is maximum when rate of change of flux is minimum. induced voltage is high. rate of change of flux is maximum. shaft rotation is high. rate of change of flux is minimum. induced voltage is high. rate of change of flux is maximum. shaft rotation is high. ANSWER DOWNLOAD EXAMIANS APP
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