number of brushes in a commutator depends on which of following factor Amount of current to be collected Speed of armature Type of winding Voltage Correct answer: 1. Amount of current to be collected Visit Electrical Engineering MCQ here for more
The vital condition for parallel operation of two generators is that they have Same kW rating Same percentage regulation The same drooping voltage characteristics The same operation RPM Correct answer: 3. The same drooping voltage characteristics Visit Electrical Engineering MCQ here for more
While applying Fleming’s right-hand rule to and direction of induced EMF, the thumb points towards Direction of flux Direction of induced EMF Direction of motion of conductor, if forefinger points along the lines of flux Direction of motion of the conductor if forefinger points in the direction of generated EMF Correct answer: 3. Direction of … Read more
When two generators are running in parallel an equalizer bar is employed So that the two identical machines will pass approximately equal currents to the load To increase the generated EMF. To increase the series flux To reduce the combined effect of armature reaction of both the machines Correct answer: 1. So that the two … Read more
Equalizer rings are vital in case the armature is wound as Delta wound Duplex wound Lap wound Wave wound Correct answer: 3. Lap wound Visit Electrical Engineering MCQ here for more
The critical resistance of generator is the resistance of Armature Brushes Field Load Correct answer: 3. Field Visit Electrical Engineering MCQ here for more
The important condition for parallel operation of two DC generators is that they should have Same kV rating Same percentage regulation The same drooping voltage characteristics The same operation RPM Correct answer: 3. The same drooping voltage characteristics Visit Electrical Engineering MCQ here for more
In generator, magnetic neutral axis coincides with the geometrical neutral axis, in case The generator runs on designed speed The generator runs on full load The generator runs on overload There is no load on the generator Correct answer: 4. There is no load on the generator Visit Electrical Engineering MCQ here for more
In a DC machine, the short-circuited field coil will outcome in Odour of barning insulation Reduction of generated voltage for which excitation has to be increased to maintain the voltage Unbalanced magnetic pull producing vibrations All of above Correct answer: 4. All of above Visit Electrical Engineering MCQ here for more
The correct statement regarding four-pole DC Generator All the four poles are north poles All the four poles are south poles Alternate poles are north and south Two north poles follow two south poles Correct answer: 3. Alternate poles are north and south Visit Electrical Engineering MCQ here for more