DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased Carbon lubricates and polishes the commutator Carbon is cheap None of the listed here Contact resistance is decreased Carbon lubricates and polishes the commutator Carbon is cheap None of the listed here 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 40 percent 10 percent 5 percent 25 percent 40 percent 10 percent 5 percent 25 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators In D.C. generators on no-load, the air gap flux distribution in space is Pulsating Sinusoidal Triangular Flat topped Pulsating Sinusoidal Triangular Flat topped ANSWER DOWNLOAD EXAMIANS APP
DC Generators A shunt generator gives its greatest voltage at Full load No load None of the listed here Half full load Full load No load None of the listed here Half full load ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature winding of a dc machine is ______ winding. Partly open circuit and partly closed circuit A closed circuit An open circuit None of the listed here Partly open circuit and partly closed circuit A closed circuit An open circuit None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of dc generator is laminated to Reduce eddy current loss Provide the bulk Insulate the core Reduce the bulk Reduce eddy current loss Provide the bulk Insulate the core Reduce the bulk ANSWER DOWNLOAD EXAMIANS APP
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