DC Generators The size of a dc generator can be reduced by using ______ High resistance winding material Lap winding Magnetic material of high permeability Iron commutator High resistance winding material Lap winding Magnetic material of high permeability Iron commutator ANSWER DOWNLOAD EXAMIANS APP
DC Generators ______ dc machine are most common. 2 pole 4 pole 6 pole 8 pole 2 pole 4 pole 6 pole 8 pole ANSWER DOWNLOAD EXAMIANS APP
DC Generators The insulating material used between the commutator segments is normally Paper Mica Graphite Insulating varnish Paper Mica Graphite Insulating varnish ANSWER DOWNLOAD EXAMIANS APP
DC Generators In D.C. generators the polarity of the interpoles Is neutral as these poles do not play part in generating e.m.f. Is the same as that of the immediately preceding pole Is the same as that of the main pole ahead Is opposite to that of the main pole ahead Is neutral as these poles do not play part in generating e.m.f. Is the same as that of the immediately preceding pole Is the same as that of the main pole ahead Is opposite to that of the main pole ahead ANSWER DOWNLOAD EXAMIANS APP
DC Generators Magnetic field in a D.C. generator is produced by Permanent magnets None of these Electromagnets Both (A) and (B) Permanent magnets None of these Electromagnets Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a practical dc generator, mechanical efficiency is Less than electrical efficiency More than electrical efficiency Equal to electrical efficiency None of the listed here Less than electrical efficiency More than electrical efficiency Equal to electrical efficiency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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