DC Generators The brush voltage drop in dc machine is about _______ 10 V 0.1 V 20 V 2 V 10 V 0.1 V 20 V 2 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ 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 Contact resistance is decreased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The commutator of a dc generator acts as A load None of the listed here An amplifier A rectifier A load None of the listed here An amplifier A rectifier ANSWER DOWNLOAD EXAMIANS APP
DC Generators For the same rating, a dc machine has_______ an ac machines. The same weight as Less weight than More weight than None of the listed here The same weight as Less weight than More weight than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator the ripples in the direct e.m.f. generated are reduced by Using commutator with large number of segments Using conductor of annealed copper Using carbon brushes of superior quality Using equalizer rings Using commutator with large number of segments Using conductor of annealed copper Using carbon brushes of superior quality Using equalizer rings ANSWER DOWNLOAD EXAMIANS APP
DC Generators Current versus time graph for an ideal commutation is a None of the listed here Parabola Hydrobola Straight line None of the listed here Parabola Hydrobola Straight line ANSWER DOWNLOAD EXAMIANS APP
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