DC Generators The main factor which leads to unstable parallel operation of flat and over compounded generators is unequal series field resistances unequal number of turns in their series field windings unequal speed regulation of their primemovers their rising voltage characteristics unequal series field resistances unequal number of turns in their series field windings unequal speed regulation of their primemovers their rising voltage characteristics ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. Less than 0.5 % 2% to 5% More than 20% 15 to 25% Less than 0.5 % 2% to 5% More than 20% 15 to 25% ANSWER DOWNLOAD EXAMIANS APP
DC Generators The purpose of providing dummy coils in a generator is 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 To reduce eddy current losses ANSWER DOWNLOAD EXAMIANS APP
DC Generators The brush voltage drop in dc machine is about _______ 20 V 2 V 0.1 V 10 V 20 V 2 V 0.1 V 10 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field structure of a dc machine uses ______ None of the listed here None salient pole arrangements Both salient and non salient pole arrangements Salient pole arrangements None of the listed here None salient pole arrangements Both salient and non salient pole arrangements Salient pole arrangements ANSWER DOWNLOAD EXAMIANS APP
DC Generators In D.C. generators, the brushes on commutator remain in contact with conductors which Lie under South Pole Lie under interpolar region Lie under North Pole Are farthest from the poles Lie under South Pole Lie under interpolar region Lie under North Pole Are farthest from the poles ANSWER DOWNLOAD EXAMIANS APP
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