DC Generators The field structure of a dc machine uses ______ Both salient and non salient pole arrangements None of the listed here None salient pole arrangements Salient pole arrangements Both salient and non salient pole arrangements None of the listed here None salient pole arrangements Salient pole arrangements ANSWER DOWNLOAD EXAMIANS APP
DC Generators A separately excited generator as compared to a self-excited generator Has exciting current independent of load current Is more stable Has all above features Is amenable to better voltage control Has exciting current independent of load current Is more stable Has all above features Is amenable to better voltage control ANSWER DOWNLOAD EXAMIANS APP
DC Generators The essential condition for parallel operation of two D.C. generators is that they have Same kW rating Same percentage regulation The same drooping voltage characteristics The same operation r.p.m. Same kW rating Same percentage regulation The same drooping voltage characteristics The same operation r.p.m. ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used To reduce the combined effect of armature reaction of both machines To increase the series flux To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both machines To increase the series flux To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load ANSWER DOWNLOAD EXAMIANS APP
DC Generators In dc generator, the generated voltage depend upon None of the listed here Both speed and flux Speed only Flux only None of the listed here Both speed and flux Speed only Flux only 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 None of the listed here Excite to full voltage Fail to excite Excite to one half of full voltage None of the listed here Excite to full voltage Fail to excite Excite to one half of full voltage ANSWER DOWNLOAD EXAMIANS APP
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