DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased None of the listed here Carbon is cheap Carbon lubricates and polishes the commutator Contact resistance is decreased None of the listed here Carbon is cheap Carbon lubricates and polishes the commutator 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 Compensating winding Shifting of axis of brushes Interpoles Dummy coils Compensating winding Shifting of axis of brushes Interpoles Dummy coils ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main drawback of a dc shunt generator is that Shunt field circuit has high resistance Terminal voltage drops considerably It is expensive Generated voltage is small Shunt field circuit has high resistance Terminal voltage drops considerably It is expensive Generated voltage is small ANSWER DOWNLOAD EXAMIANS APP
DC Generators The number of brushes in a commutator depends on Voltage Type of winding Speed of armature Amount of current to be collected Voltage Type of winding Speed of armature Amount of current to be collected ANSWER DOWNLOAD EXAMIANS APP
DC Generators The brush voltage drop in dc machine is about _______ 0.1 V 10 V 20 V 2 V 0.1 V 10 V 20 V 2 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator? Commutator Equalizer rings Eye bolt Dummy coils Commutator Equalizer rings Eye bolt Dummy coils ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS