DC Generators Carbon brushes are used in a dc machine because _______ Carbon lubricates and polishes the commutator None of the listed here Contact resistance is decreased Carbon is cheap Carbon lubricates and polishes the commutator None of the listed here Contact resistance is decreased Carbon is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Generators A triplex wave winding will have parallel paths. 4 6 2 None of the listed here 4 6 2 None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of dc machine is laminated in order to reduce Copper loss Frictional loss Eddy current loss Hysteresis loss Copper loss Frictional loss Eddy current loss Hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators The terminal voltage of a D.C. shunt generator drops on load because of all of the following reasons except Field weakening due to armature reaction and armature Commutation Armature reaction Armature resistance drop Field weakening due to armature reaction and armature Commutation Armature reaction Armature resistance drop ANSWER DOWNLOAD EXAMIANS APP
DC Generators Brushes of D.C. machines are made of Carbon Soft copper All of above Hard copper Carbon Soft copper All of above Hard copper ANSWER DOWNLOAD EXAMIANS APP
DC Generators A 4-pole dc machine has _____ magnetic circuits. 4 2 6 8 4 2 6 8 ANSWER DOWNLOAD EXAMIANS APP
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