DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. 2% to 5% 15 to 25% Less than 0.5 % More than 20% 2% to 5% 15 to 25% Less than 0.5 % More than 20% ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator in order to reduce sparking at brushes, the self-induced e.m.f. in the coil is neutralized by all of the following except Compensating winding Interpoles Dummy coils Shifting of axis of brushes Compensating winding Interpoles Dummy coils Shifting of axis of brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following could be lamina proximately the thickness of laminations of a D.C. machine? 0.05 mm 0.005 mm 5 m 0.5 m 0.05 mm 0.005 mm 5 m 0.5 m ANSWER DOWNLOAD EXAMIANS APP
DC Generators The effect of armature reaction is to None of the listed here Increase the total flux Make the air gap flux uniform Decrease the total flux None of the listed here Increase the total flux Make the air gap flux uniform Decrease the total flux ANSWER DOWNLOAD EXAMIANS APP
DC Generators Dc machines which are subjected to abrupt changes of load are provided with Copper brushes Equalisers Interpole windings Compensating windings Copper brushes Equalisers Interpole windings Compensating windings ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. machine stray loss is the sum of Shunt field copper loss and mechanical loss Iron loss and mechanical loss Total copper loss and mechanical loss Armature copper loss and iron loss Shunt field copper loss and mechanical loss Iron loss and mechanical loss Total copper loss and mechanical loss Armature copper loss and iron loss ANSWER DOWNLOAD EXAMIANS APP
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