DC Generators The main factor which leads to unstable parallel operation of flat and over compounded generators is unequal number of turns in their series field windings unequal speed regulation of their primemovers unequal series field resistances their rising voltage characteristics unequal number of turns in their series field windings unequal speed regulation of their primemovers unequal series field resistances their rising voltage characteristics ANSWER DOWNLOAD EXAMIANS APP
DC Generators A 4-pole , lap wound dc shunt generator has an armature winding consisting of 220 turns each of 0.004 Ω. The armature resistance is 0.055 Ω 1 Ω 0.025 Ω 0.5 Ω 0.055 Ω 1 Ω 0.025 Ω 0.5 Ω ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to All of these Rough commutator bars Excessive spring pressure Abrasion from dust All of these Rough commutator bars Excessive spring pressure Abrasion from dust ANSWER DOWNLOAD EXAMIANS APP
DC Generators The number of brushes in a commutator depends on Speed of armature Type of winding Voltage Amount of current to be collected Speed of armature Type of winding Voltage Amount of current to be collected ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. generators are running in parallel an equalizer bar is used To increase the series flux To reduce the combined effect of armature reaction of both the machines To increase the generated e.m.f. So that the two identical machines will pass approximately equal currents to the load To increase the series flux To reduce the combined effect of armature reaction of both the machines To increase the generated e.m.f. So that the two identical machines will pass approximately equal currents to the load ANSWER DOWNLOAD EXAMIANS APP
DC Generators The real working part of a dc machine is the ______ Commutator None of the listed here Field winding Armature winding Commutator None of the listed here Field winding Armature winding ANSWER DOWNLOAD EXAMIANS APP
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