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 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. 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 The armature of dc machine is laminated in order to reduce Copper loss Hysteresis loss Eddy current loss Frictional loss Copper loss Hysteresis loss Eddy current loss Frictional loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators The copper loss is constant for Both shunt and compound generator Series generator only Shunt generator only None of the listed here Both shunt and compound generator Series generator only Shunt generator only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators In case of dc machines, mechanical losses are primary function of Current Voltage Speed None of the listed here Current Voltage Speed None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators Brushes of D.C. machines are made of Soft copper Carbon Hard copper All of above Soft copper Carbon Hard copper All of above ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS