DC Generators To avoid formation of grooves in the commutator of a D.C. machine The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving The brushes of same polarity should track each other All of these The brushes of opposite polarity should track each other Brush position has no effect on the commutator grooving The brushes of same polarity should track each other All of these ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a dc generator, the eddy current power loss is None of the listed here Directly proportional to thickness of each lamination Directly proportional to sqaure of thickness of each lamination Inversely proprtional to thickness of each lamination None of the listed here Directly proportional to thickness of each lamination Directly proportional to sqaure of thickness of each lamination Inversely proprtional to thickness of each lamination 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 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 To increase the speed and hence generated e.m.f. To reduce the combined effect of armature reaction of both machines ANSWER DOWNLOAD EXAMIANS APP
DC Generators The terminal voltage of a series generator is 150 V when the load current is 5 A. If the load current is increased to 10 A, the terminal voltage will be None of these Greater than 150 V Less than 150 V 150 V None of these Greater than 150 V Less than 150 V 150 V ANSWER DOWNLOAD EXAMIANS APP
DC Generators The O. C. C. of a dc generator Is different for different generators Is similar for all types of generators None of the listed here May be same or different Is different for different generators Is similar for all types of generators None of the listed here May be same or different ANSWER DOWNLOAD EXAMIANS APP
DC Generators The dc generator that has poorest voltage is Over compounded generator Series generator Flat compounded generator Shunt generator Over compounded generator Series generator Flat compounded generator Shunt generator ANSWER DOWNLOAD EXAMIANS APP
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