DC Generators The current in armature conductors of a dc machine is ______ Pulsating dc Pure dc Ac Pure dc plus pulsating dc Pulsating dc Pure dc Ac Pure dc plus pulsating dc ANSWER DOWNLOAD EXAMIANS APP
DC Generators To avoid formation of grooves in the commutator of a D.C. machine The brushes of opposite polarity should track each other The brushes of same polarity should track each other Brush position has no effect on the commutator grooving All of these The brushes of opposite polarity should track each other The brushes of same polarity should track each other Brush position has no effect on the commutator grooving All of these ANSWER DOWNLOAD EXAMIANS APP
DC Generators The overall efficiency of a dc generator is maximum when its variable loss is equal to Constant loss Iron loss Stray loss Mechanical loss Constant loss Iron loss Stray loss Mechanical loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to All of these Excessive spring pressure Rough commutator bars Abrasion from dust All of these Excessive spring pressure Rough commutator bars Abrasion from dust 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 Which of the following generating machine will offer constant voltage on all loads? Level compounded generator Separately excited generator All of these Self-excited generator Level compounded generator Separately excited generator All of these Self-excited generator ANSWER DOWNLOAD EXAMIANS APP
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