DC Generators The rapid wear of brushes takes place due to Abrasion from dust All of these Rough commutator bars Excessive spring pressure Abrasion from dust All of these Rough commutator bars Excessive spring pressure ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator the critical resistance refers to the resistance of Armature Brushes Load Field Armature Brushes Load Field ANSWER DOWNLOAD EXAMIANS APP
DC Generators The brush voltage drop in dc machine is about _______ 2 V 10 V 20 V 0.1 V 2 V 10 V 20 V 0.1 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used To increase the series flux To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both machines To increase the series flux To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both machines ANSWER DOWNLOAD EXAMIANS APP
DC Generators A 4-pole dc machine has _____ magnetic circuits. 6 8 2 4 6 8 2 4 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be 640 V 580 V 620 V 600 V 640 V 580 V 620 V 600 V ANSWER DOWNLOAD EXAMIANS APP
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