DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased None of the listed here Carbon is cheap Carbon lubricates and polishes the commutator Contact resistance is decreased None of the listed here Carbon is cheap Carbon lubricates and polishes the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Generators The purpose of providing dummy coils in a generator is To enhance flux density 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 ANSWER DOWNLOAD EXAMIANS APP
DC Generators A shunt generator gives its greatest voltage at None of the listed here Half full load No load Full load None of the listed here Half full load No load Full load 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 25 percent 10 percent 40 percent 5 percent 25 percent 10 percent 40 percent 5 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a long shunt compound wound generator , the shunt field is connected in parallel with Series combination of armature and series field Series field Parallel combination of armature and series field Armature Series combination of armature and series field Series field Parallel combination of armature and series field Armature ANSWER DOWNLOAD EXAMIANS APP
DC Generators High voltage dc machine use _____ winding. Either lap or wave Lap None of the listed here Wave Either lap or wave Lap None of the listed here Wave ANSWER DOWNLOAD EXAMIANS APP
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