DC Generators The rapid wear of brushes takes place due to All of these Rough commutator bars Abrasion from dust Excessive spring pressure All of these Rough commutator bars Abrasion from dust Excessive spring pressure ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. machine stray loss is the sum of Iron loss and mechanical loss Armature copper loss and iron loss Total copper loss and mechanical loss Shunt field copper loss and mechanical loss Iron loss and mechanical loss Armature copper loss and iron loss Total copper loss and mechanical loss Shunt field copper loss and mechanical loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators In case of dc machines, mechanical losses are primary function of Current Speed Voltage None of the listed here Current Speed Voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following generating machine will offer constant voltage on all loads? Self-excited generator Separately excited generator Level compounded generator All of these Self-excited generator Separately excited generator Level compounded generator All of these ANSWER DOWNLOAD EXAMIANS APP
DC Generators The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be 640 V 620 V 580 V 600 V 640 V 620 V 580 V 600 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators The efficiency of a dc generator is maximum when its variable loss is Equal to half of constant loss Equal to double the constant loss None of the listed here Equal to Constant loss Equal to half of constant loss Equal to double the constant loss None of the listed here Equal to Constant loss ANSWER DOWNLOAD EXAMIANS APP
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