DC Generators The open circuit voltage of a compound generator is 250 V. At full load the terminal voltage Will always be 250 V May be greater or less than 250 V None of these Will be less than 250 V Will always be 250 V May be greater or less than 250 V None of these Will be less than 250 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main drawback of a dc shunt generator is that Shunt field circuit has high resistance Terminal voltage drops considerably It is expensive Generated voltage is small Shunt field circuit has high resistance Terminal voltage drops considerably It is expensive Generated voltage is small ANSWER DOWNLOAD EXAMIANS APP
DC Generators Permeance is the reciprocal of Ampere turns Reluctance Resistance Flux density Ampere turns Reluctance Resistance Flux density ANSWER DOWNLOAD EXAMIANS APP
DC Generators If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be High Zero Small The same as rated voltage High Zero Small The same as rated voltage 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 reduce the combined effect of armature reaction of both machines To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load To increase the series flux To reduce the combined effect of armature reaction of both machines To increase the speed and hence generated e.m.f. So that two similar machines will pass approximately equal currents to the load ANSWER DOWNLOAD EXAMIANS APP
DC Generators The commutator segments are connected to the armature conductors by means of Copper lugs Brazing Insulation pads Resistance wires Copper lugs Brazing Insulation pads Resistance wires ANSWER DOWNLOAD EXAMIANS APP
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