DC Generators A 4-pole dc machine has _____ magnetic circuits. 6 2 4 8 6 2 4 8 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The purpose of providing dummy coils in a generator is To reduce eddy current losses To amplify voltage To enhance flux density To provide mechanical balance for the rotor To reduce eddy current losses To amplify voltage To enhance flux density To provide mechanical balance for the rotor ANSWER DOWNLOAD EXAMIANS APP
DC Generators Permeance is the reciprocal of Resistance Ampere turns Flux density Reluctance Resistance Ampere turns Flux density Reluctance ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator the ripples in the direct e.m.f. generated are reduced by Using carbon brushes of superior quality Using conductor of annealed copper Using equalizer rings Using commutator with large number of segments Using carbon brushes of superior quality Using conductor of annealed copper Using equalizer rings Using commutator with large number of segments ANSWER DOWNLOAD EXAMIANS APP
DC Generators The no load voltage of a generator is 240 V and rated load voltage is 220 V. The voltage regulation of the generator is 4.5% 9.1% 2.8% 11.3% 4.5% 9.1% 2.8% 11.3% ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a lap winding, the number of the brushes required is equal to None of the listed here Commutator pitch Number of pairs of poles Number of poles None of the listed here Commutator pitch Number of pairs of poles Number of poles ANSWER DOWNLOAD EXAMIANS APP
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