DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. Less than 0.5 % More than 20% 2% to 5% 15 to 25% Less than 0.5 % More than 20% 2% to 5% 15 to 25% 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 Dummy coils Shifting of axis of brushes Interpoles Compensating winding Dummy coils Shifting of axis of brushes Interpoles ANSWER DOWNLOAD EXAMIANS APP
DC Generators The O. C. C. of a dc generator May be same or different Is similar for all types of generators None of the listed here Is different for different generators May be same or different Is similar for all types of generators None of the listed here Is different for different generators ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the value of shunt field resistance of a shunt generator is greater than the critical resistance, the generator will Excite to full voltage None of the listed here Excite to one half of full voltage Fail to excite Excite to full voltage None of the listed here Excite to one half of full voltage Fail to excite ANSWER DOWNLOAD EXAMIANS APP
DC Generators The size of a dc generator can be reduced by using ______ High resistance winding material Magnetic material of high permeability Iron commutator Lap winding High resistance winding material Magnetic material of high permeability Iron commutator Lap winding ANSWER DOWNLOAD EXAMIANS APP
DC Generators Small dc machines generally have _____ poles. 6 8 2 4 6 8 2 4 ANSWER DOWNLOAD EXAMIANS APP
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