DC Generators In a four-pole D.C. machine Alternate poles are north and south Two north poles follow two south poles All the four poles are south poles All the four poles are north poles Alternate poles are north and south Two north poles follow two south poles All the four poles are south poles All the four poles are north poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators The bearings used to support the rotor shafts are generally Bush bearings Ball bearings Needle bearings Magnetic bearings Bush bearings Ball bearings Needle bearings Magnetic bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator in order to reduce sparking at brushes, the self-induced e.m.f. in the coil is neutralized by all of the following except Interpoles Compensating winding Shifting of axis of brushes Dummy coils Interpoles Compensating winding Shifting of axis of brushes Dummy coils ANSWER DOWNLOAD EXAMIANS APP
DC Generators The resistance of armature winding depends on Number of conductors All of the listed here Cross sectional area of the conductor Length of conductor Number of conductors All of the listed here Cross sectional area of the conductor Length of conductor ANSWER DOWNLOAD EXAMIANS APP
DC Generators A 4-pole , lap wound dc shunt generator has an armature winding consisting of 220 turns each of 0.004 Ω. The armature resistance is 0.055 Ω 1 Ω 0.025 Ω 0.5 Ω 0.055 Ω 1 Ω 0.025 Ω 0.5 Ω ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a wave winding, the commutator pitch is approximately equal to Pole pitch Twice the pole pitch None of the listed here Thrice the pole pitch Pole pitch Twice the pole pitch None of the listed here Thrice the pole pitch ANSWER DOWNLOAD EXAMIANS APP
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