DC Generators The essential condition for parallel operation of two D.C. generators is that they have The same drooping voltage characteristics Same percentage regulation Same kW rating The same operation r.p.m. The same drooping voltage characteristics Same percentage regulation Same kW rating The same operation r.p.m. 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 Shifting of axis of brushes Dummy coils Interpoles Compensating winding Shifting of axis of brushes Dummy coils Interpoles ANSWER DOWNLOAD EXAMIANS APP
DC Generators Brushes of D.C. machines are made of Soft copper All of above Carbon Hard copper Soft copper All of above Carbon Hard copper ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used So that two similar machines will pass approximately equal currents to the load To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines To increase the series flux So that two similar machines will pass approximately equal currents to the load To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines To increase the series flux ANSWER DOWNLOAD EXAMIANS APP
DC Generators The nature of armature winding of a dc machine is decided by Back pitch Front pitch Commutator pitch None of the listed here Back pitch Front pitch Commutator pitch None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators In lap winding, the number of brushes is always Same as the number of poles Double the number of poles Two Half the number of poles Same as the number of poles Double the number of poles Two Half the number of poles ANSWER DOWNLOAD EXAMIANS APP
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