DC Generators In a four-pole D.C. machine All the four poles are south poles Two north poles follow two south poles Alternate poles are north and south All the four poles are north poles All the four poles are south poles Two north poles follow two south poles Alternate poles are north and south All the four poles are north poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators Current versus time graph for an ideal commutation is a Parabola None of the listed here Hydrobola Straight line Parabola None of the listed here Hydrobola Straight line 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 5 percent 25 percent 10 percent 40 percent 5 percent 25 percent 10 percent 40 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators The size of a dc generator can be reduced by using ______ Lap winding Iron commutator Magnetic material of high permeability High resistance winding material Lap winding Iron commutator Magnetic material of high permeability High resistance winding material ANSWER DOWNLOAD EXAMIANS APP
DC Generators The overall efficiency of a dc generator is maximum when its variable loss is equal to Mechanical loss Iron loss Constant loss Stray loss Mechanical loss Iron loss Constant loss Stray loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators Shunt generators are most suited for stable parallel operation because of their identical voltage characteristics linear voltage characteristics rising voltage characteristics drooping voltage characteristics identical voltage characteristics linear voltage characteristics rising voltage characteristics drooping voltage characteristics ANSWER DOWNLOAD EXAMIANS APP
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