DC Generators The commutator of a dc generator acts as A rectifier None of the listed here An amplifier A load A rectifier None of the listed here An amplifier A load 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 Field weakening due to armature reaction and armature Commutation Armature reaction Armature resistance drop Field weakening due to armature reaction and armature Commutation Armature reaction Armature resistance drop ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. 15 to 25% 2% to 5% More than 20% Less than 0.5 % 15 to 25% 2% to 5% More than 20% Less than 0.5 % ANSWER DOWNLOAD EXAMIANS APP
DC Generators The overall efficiency of a dc generator is maximum when its variable loss is equal to Constant loss Stray loss Mechanical loss Iron loss Constant loss Stray loss Mechanical loss Iron loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators The essential condition for parallel operation of two D.C. generators is that they have 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. Same percentage regulation ANSWER DOWNLOAD EXAMIANS APP
DC Generators In case of dc machines, mechanical losses are primary function of Voltage Current None of the listed here Speed Voltage Current None of the listed here Speed ANSWER DOWNLOAD EXAMIANS APP
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