DC Generators If the flux per pole of dc generator is halved but its speed is doubled, its generated emf will Be halved Be quadrupled Be doubled Remain the same Be halved Be quadrupled Be doubled Remain the same ANSWER DOWNLOAD EXAMIANS APP
DC Generators The essential condition for parallel operation of two D.C. generators is that they have Same percentage regulation Same kW rating The same drooping voltage characteristics The same operation r.p.m. Same percentage regulation Same kW rating The same drooping voltage characteristics The same operation r.p.m. ANSWER DOWNLOAD EXAMIANS APP
DC Generators In D.C. generators the polarity of the interpoles Is the same as that of the main pole ahead Is opposite to that of the main pole ahead Is the same as that of the immediately preceding pole Is neutral as these poles do not play part in generating e.m.f. Is the same as that of the main pole ahead Is opposite to that of the main pole ahead Is the same as that of the immediately preceding pole Is neutral as these poles do not play part in generating e.m.f. ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine is made of ______ Cast steel Wrought iron Soft iron Silocon steel Cast steel Wrought iron Soft iron Silocon steel ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a wave winding, the commutator pitch is approximately equal to Pole pitch Thrice the pole pitch None of the listed here Twice the pole pitch Pole pitch Thrice the pole pitch None of the listed here Twice the pole pitch ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased Carbon lubricates and polishes the commutator None of the listed here Carbon is cheap Contact resistance is decreased Carbon lubricates and polishes the commutator None of the listed here Carbon is cheap ANSWER DOWNLOAD EXAMIANS APP
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