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 Brushes of D.C. machines are made of Hard copper All of above Soft copper Carbon Hard copper All of above Soft copper Carbon ANSWER DOWNLOAD EXAMIANS APP
DC Generators Number of tapings for each equalizer ring is equal to Number of parallel paths Number of poles Number of commutator segments Number of pole pairs Number of parallel paths Number of poles Number of commutator segments Number of pole pairs ANSWER DOWNLOAD EXAMIANS APP
DC Generators Current versus time graph for an ideal commutation is a Hydrobola Straight line Parabola None of the listed here Hydrobola Straight line Parabola 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 A shunt generator gives its greatest voltage at None of the listed here No load Full load Half full load None of the listed here No load Full load Half full load ANSWER DOWNLOAD EXAMIANS APP
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