DC Generators To avoid formation of grooves in the commutator of a D.C. machine The brushes of same polarity should track each other Brush position has no effect on the commutator grooving The brushes of opposite polarity should track each other All of these The brushes of same polarity should track each other Brush position has no effect on the commutator grooving The brushes of opposite polarity should track each other All of these ANSWER DOWNLOAD EXAMIANS APP
DC Generators Magnetic field in a D.C. generator is produced by None of these Both (A) and (B) Permanent magnets Electromagnets None of these Both (A) and (B) Permanent magnets Electromagnets ANSWER DOWNLOAD EXAMIANS APP
DC Generators In lap winding, the number of brushes is always Same as the number of poles Half the number of poles Two Double the number of poles Same as the number of poles Half the number of poles Two Double the number of poles 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 0.025 Ω 0.5 Ω 0.055 Ω 1 Ω 0.025 Ω 0.5 Ω 0.055 Ω 1 Ω ANSWER DOWNLOAD EXAMIANS APP
DC Generators The voltage drop for which of the following types of brush can be expected to be least? None of these Carbon brushes Metal graphite brushes Graphite brushes None of these Carbon brushes Metal graphite brushes Graphite brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators An 8 pole duplex lap winding will have ______ parallel paths. 16 4 8 32 16 4 8 32 ANSWER DOWNLOAD EXAMIANS APP
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