DC Generators A 4-pole dc machine has _____ magnetic circuits. 4 8 6 2 4 8 6 2 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field coil of dc generator are usually made of Copper Carbon Mica Cast iron Copper Carbon Mica Cast iron ANSWER DOWNLOAD EXAMIANS APP
DC Generators In lap winding, the number of brushes is always Half the number of poles Same as the number of poles Two Double the number of poles Half the number of poles Same as the number of poles Two Double the number of poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators The greatest percentage of heat loss in a dc machine is due to ______ Frictional loss Eddy current loss Copper loss Hysteresis loss Frictional loss Eddy current loss Copper loss Hysteresis loss 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 Excite to one half of full voltage Fail to excite None of the listed here Excite to full voltage Excite to one half of full voltage Fail to excite None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. generators are running in parallel an equalizer bar is used To increase the series flux So that the two identical machines will pass approximately equal currents to the load To increase the generated e.m.f. To reduce the combined effect of armature reaction of both the machines To increase the series flux So that the two identical machines will pass approximately equal currents to the load To increase the generated e.m.f. To reduce the combined effect of armature reaction of both the machines ANSWER DOWNLOAD EXAMIANS APP
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