DC Generators Inter-pole flux should be sufficient to Neutralize the armature reaction flux Neutralize the commutating self induced e.m.f. None of these Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil Neutralize the armature reaction flux Neutralize the commutating self induced e.m.f. None of these Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Carbon is cheap None of the listed here Contact resistance is decreased Carbon lubricates and polishes the commutator Carbon is cheap None of the listed here Contact resistance is decreased Carbon lubricates and polishes the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Generators The greatest percentage of heat loss in a dc machine is due to ______ Hysteresis loss Frictional loss Eddy current loss Copper loss Hysteresis loss Frictional loss Eddy current loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators Shunt generators are most suited for stable parallel operation because of their drooping voltage characteristics linear voltage characteristics identical voltage characteristics rising voltage characteristics drooping voltage characteristics linear voltage characteristics identical voltage characteristics rising voltage characteristics ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main factor which leads to unstable parallel operation of flat and over compounded generators is unequal series field resistances unequal number of turns in their series field windings their rising voltage characteristics unequal speed regulation of their primemovers unequal series field resistances unequal number of turns in their series field windings their rising voltage characteristics unequal speed regulation of their primemovers ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine is made of ______ Soft iron Wrought iron Cast steel Silocon steel Soft iron Wrought iron Cast steel Silocon steel ANSWER DOWNLOAD EXAMIANS APP
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