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 25 percent 10 percent 40 percent 5 percent 25 percent 10 percent 40 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators The purpose of providing dummy coils in a generator is To reduce eddy current losses To amplify voltage To provide mechanical balance for the rotor To enhance flux density To reduce eddy current losses To amplify voltage To provide mechanical balance for the rotor To enhance flux density ANSWER DOWNLOAD EXAMIANS APP
DC Generators To avoid formation of grooves in the commutator of a D.C. machine 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 The brushes of opposite polarity should track each other ANSWER DOWNLOAD EXAMIANS APP
DC Generators Current versus time graph for an ideal commutation is a None of the listed here Straight line Hydrobola Parabola None of the listed here Straight line Hydrobola Parabola ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature winding of a dc machine is ______ winding. A closed circuit Partly open circuit and partly closed circuit An open circuit None of the listed here A closed circuit Partly open circuit and partly closed circuit An open circuit None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators High voltage dc machine use _____ winding. Wave Either lap or wave None of the listed here Lap Wave Either lap or wave None of the listed here Lap ANSWER DOWNLOAD EXAMIANS APP
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