DC Generators If the flux per pole of dc generator is halved but its speed is doubled, its generated emf will Be quadrupled Remain the same Be doubled Be halved Be quadrupled Remain the same Be doubled Be halved ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a four-pole D.C. machine Two north poles follow two south poles All the four poles are south poles Alternate poles are north and south All the four poles are north poles Two north poles follow two south poles All the four poles are south poles Alternate poles are north and south All the four poles are north poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators As a result of armature reaction, the reduction in the total mutual air gap flux in a D.C. generator is approximately 5 percent 40 percent 10 percent 25 percent 5 percent 40 percent 10 percent 25 percent 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 So that the two identical machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both the machines To increase the generated e.m.f. To increase the series flux So that the two identical machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both the machines To increase the generated e.m.f. ANSWER DOWNLOAD EXAMIANS APP
DC Generators The voltage drop for which of the following types of brush can be expected to be least? Carbon brushes None of these Graphite brushes Metal graphite brushes Carbon brushes None of these Graphite brushes Metal graphite brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators The critical resistance of the D.C. generator is the resistance of Brushes Field Armature Load Brushes Field Armature Load ANSWER DOWNLOAD EXAMIANS APP
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