DC Generators Carbon brushes are used in a dc machine because _______ Carbon lubricates and polishes the commutator Carbon is cheap None of the listed here Contact resistance is decreased Carbon lubricates and polishes the commutator Carbon is cheap None of the listed here Contact resistance is decreased ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a lap winding, the number of the brushes required is equal to Commutator pitch 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 ANSWER DOWNLOAD EXAMIANS APP
DC Generators Permeance is the reciprocal of Flux density Ampere turns Reluctance Resistance Flux density Ampere turns Reluctance Resistance ANSWER DOWNLOAD EXAMIANS APP
DC Generators Dc machines which are subjected to abrupt changes of load are provided with Compensating windings Equalisers Interpole windings Copper brushes Compensating windings Equalisers Interpole windings Copper brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators Wave winding is composed of That even number which is exact multiple of poles Any odd number of conductors Any even number of conductors That even number which is exact multiple of poles + 2 That even number which is exact multiple of poles Any odd number of conductors Any even number of conductors That even number which is exact multiple of poles + 2 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine is made of ______ Wrought iron Silocon steel Cast steel Soft iron Wrought iron Silocon steel Cast steel Soft iron ANSWER DOWNLOAD EXAMIANS APP
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