DC Generators In a lap winding, the number of the brushes required is equal to Number of poles None of the listed here Number of pairs of poles Commutator pitch Number of poles None of the listed here Number of pairs of poles Commutator pitch ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Abrasion from dust All of these Excessive spring pressure Rough commutator bars Abrasion from dust All of these Excessive spring pressure Rough commutator bars ANSWER DOWNLOAD EXAMIANS APP
DC Generators The insulating material used between the commutator segments is normally Mica Insulating varnish Graphite Paper Mica Insulating varnish Graphite Paper ANSWER DOWNLOAD EXAMIANS APP
DC Generators Magnetic field in a D.C. generator is produced by Both (A) and (B) Electromagnets None of these Permanent magnets Both (A) and (B) Electromagnets None of these Permanent magnets ANSWER DOWNLOAD EXAMIANS APP
DC Generators The yoke of a dc machine carries ______ pole flux. Three times One-half of None of the listed here Two times the Three times One-half of None of the listed here Two times the ANSWER DOWNLOAD EXAMIANS APP
DC Generators _____ together are called stray losses. Iron and friction losses Frictional loss and copper loss Field copper loss and iron loss Copper and iron losses Iron and friction losses Frictional loss and copper loss Field copper loss and iron loss Copper and iron losses ANSWER DOWNLOAD EXAMIANS APP
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