DC Generators In a D.C. generator the critical resistance refers to the resistance of Field Armature Load Brushes Field Armature Load Brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators Inter-pole flux should be sufficient to Neutralize the commutating self induced e.m.f. Neutralize the armature reaction flux None of these Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil Neutralize the commutating self induced e.m.f. Neutralize the armature reaction flux 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 The size of a dc generator can be reduced by using ______ Magnetic material of high permeability High resistance winding material Lap winding Iron commutator Magnetic material of high permeability High resistance winding material Lap winding Iron commutator ANSWER DOWNLOAD EXAMIANS APP
DC Generators As a result of armature reaction, the reduction in the total mutual air gap flux in a D.C. generator is approximately 10 percent 25 percent 5 percent 40 percent 10 percent 25 percent 5 percent 40 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators _____ together are called stray losses. Copper and iron losses Iron and friction losses Field copper loss and iron loss Frictional loss and copper loss Copper and iron losses Iron and friction losses Field copper loss and iron loss Frictional loss and copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators To avoid formation of grooves in the commutator of a D.C. machine All of these Brush position has no effect on the commutator grooving The brushes of same polarity should track each other The brushes of opposite polarity should track each other All of these Brush position has no effect on the commutator grooving The brushes of same polarity should track each other The brushes of opposite polarity should track each other ANSWER DOWNLOAD EXAMIANS APP
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