DC Generators When two D.C. series generators are running in parallel, an equalizer bar is used To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines To increase the series flux So that two similar machines will pass approximately equal currents to the load To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines To increase the series flux So that two similar machines will pass approximately equal currents to the load ANSWER DOWNLOAD EXAMIANS APP
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 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 unequal series field resistances ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature winding of a dc machine is place on the rotor to ______ Reduce armature reaction Save iron Reduce losses Facilitate commutation Reduce armature reaction Save iron Reduce losses Facilitate commutation ANSWER DOWNLOAD EXAMIANS APP
DC Generators Number of tapings for each equalizer ring is equal to Number of parallel paths Number of commutator segments Number of pole pairs Number of poles Number of parallel paths Number of commutator segments Number of pole pairs Number of poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators Small dc machines generally have _____ poles. 6 8 4 2 6 8 4 2 ANSWER DOWNLOAD EXAMIANS APP
DC Generators Laminations of core are generally made of Carbon Case iron Stainless steel Silicon steel Carbon Case iron Stainless steel Silicon steel ANSWER DOWNLOAD EXAMIANS APP
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