DC Generators Carbon brushes are used in a dc machine because _______ Carbon is cheap None of the listed here Carbon lubricates and polishes the commutator Contact resistance is decreased Carbon is cheap None of the listed here Carbon lubricates and polishes the commutator Contact resistance is decreased ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a simplex wave winding, the number of parallel paths is equal to _____ Number of pairs of poles Numbers of poles in the machine None of the listed here 2 Number of pairs of poles Numbers of poles in the machine None of the listed here 2 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The number of brushes in a commutator depends on Amount of current to be collected Speed of armature Type of winding Voltage Amount of current to be collected Speed of armature Type of winding Voltage ANSWER DOWNLOAD EXAMIANS APP
DC Generators Due to armature reaction, the main pole flux of a dc generator is Weakened as well as distorted Weakend only Distorted only None of the listed here Weakened as well as distorted Weakend only Distorted only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators Current versus time graph for an ideal commutation is a Straight line None of the listed here Parabola Hydrobola Straight line None of the listed here Parabola Hydrobola ANSWER DOWNLOAD EXAMIANS APP
DC Generators Wave winding is composed of That even number which is exact multiple of poles Any even number of conductors That even number which is exact multiple of poles + 2 Any odd number of conductors That even number which is exact multiple of poles Any even number of conductors That even number which is exact multiple of poles + 2 Any odd number of conductors ANSWER DOWNLOAD EXAMIANS APP
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