DC Generators To avoid formation of grooves in the commutator of a D.C. machine The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving All of these The brushes of same polarity should track each other The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving All of these The brushes of same polarity should track each other ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature core of a D.C. generator is usually made of Copper Cast-iron Nonferrous material Silicon steel Copper Cast-iron Nonferrous material Silicon steel ANSWER DOWNLOAD EXAMIANS APP
DC Generators A 6 pole lap wound generator has 300 conductors, the emf induced per conductor being 5 V. The generated voltage of the generator is _____ 250 V 60 V 360 V 1500 V 250 V 60 V 360 V 1500 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Rough commutator bars Excessive spring pressure All of these Abrasion from dust Rough commutator bars Excessive spring pressure All of these Abrasion from dust ANSWER DOWNLOAD EXAMIANS APP
DC Generators The nature of armature winding of a dc machine is decided by Back pitch None of the listed here Commutator pitch Front pitch Back pitch None of the listed here Commutator pitch Front pitch ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the value of shunt field resistance of a shunt generator is greater than the critical resistance, the generator will Excite to one half of full voltage None of the listed here Fail to excite Excite to full voltage Excite to one half of full voltage None of the listed here Fail to excite Excite to full voltage ANSWER DOWNLOAD EXAMIANS APP
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