DC Generators In a practical dc generator, mechanical efficiency is Equal to electrical efficiency More than electrical efficiency Less than electrical efficiency None of the listed here Equal to electrical efficiency More than electrical efficiency Less than electrical efficiency None of the listed here 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 Shifting of axis of brushes Compensating winding Interpoles Dummy coils Shifting of axis of brushes Compensating winding Interpoles Dummy coils ANSWER DOWNLOAD EXAMIANS APP
DC Generators The voltage drop for which of the following types of brush can be expected to be least? Graphite brushes None of these Carbon brushes Metal graphite brushes Graphite brushes None of these Carbon brushes Metal graphite brushes 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 Fail to excite 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 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. More than 20% 15 to 25% 2% to 5% Less than 0.5 % More than 20% 15 to 25% 2% to 5% Less than 0.5 % ANSWER DOWNLOAD EXAMIANS APP
DC Generators High voltage dc machine use _____ winding. None of the listed here Either lap or wave Lap Wave None of the listed here Either lap or wave Lap Wave ANSWER DOWNLOAD EXAMIANS APP
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