DC Generators In a D.C. generator the magnetic neutral axis coincides with the geometrical neutral axis, when The generator runs on designed speed The generator runs on overload The generator runs on full load There is no load on the generator The generator runs on designed speed The generator runs on overload The generator runs on full load There is no load on the generator ANSWER DOWNLOAD EXAMIANS APP
DC Generators The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except Armature resistance drop Commutation Armature reaction Field weakening due to armature reaction and armature Armature resistance drop Commutation Armature reaction Field weakening due to armature reaction and armature ANSWER DOWNLOAD EXAMIANS APP
DC Generators The essential condition for parallel operation of two D.C. generators is that they have The same drooping voltage characteristics Same percentage regulation Same kW rating The same operation r.p.m. The same drooping voltage characteristics Same percentage regulation Same kW rating The same operation r.p.m. ANSWER DOWNLOAD EXAMIANS APP
DC Generators Brushes of D.C. machines are made of Soft copper Carbon All of above Hard copper Soft copper Carbon All of above Hard copper ANSWER DOWNLOAD EXAMIANS APP
DC Generators Wave winding is composed of That even number which is exact multiple of poles Any odd number of conductors That even number which is exact multiple of poles + 2 Any even number of conductors That even number which is exact multiple of poles Any odd number of conductors That even number which is exact multiple of poles + 2 Any even number of conductors ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. generators are running in parallel an equalizer bar is used To increase the generated e.m.f. To reduce the combined effect of armature reaction of both the machines So that the two identical machines will pass approximately equal currents to the load To increase the series flux To increase the generated e.m.f. To reduce the combined effect of armature reaction of both the machines So that the two identical machines will pass approximately equal currents to the load To increase the series flux ANSWER DOWNLOAD EXAMIANS APP
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