DC Generators The yoke of a dc machine is made of Aluminum Cast steel Soft iron Silicon steel Aluminum Cast steel Soft iron Silicon steel ANSWER DOWNLOAD EXAMIANS APP
DC Generators Brushes of D.C. machines are made of Soft copper All of above Carbon Hard copper Soft copper All of above Carbon Hard copper ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to All of these Excessive spring pressure Abrasion from dust Rough commutator bars All of these Excessive spring pressure Abrasion from dust Rough commutator bars ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature copper loss in a dc generator is a Constant loss None of the listed here Stray loss Variable loss Constant loss None of the listed here Stray loss Variable loss ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Contact resistance is decreased Carbon lubricates and polishes the commutator None of the listed here Carbon is cheap Contact resistance is decreased Carbon lubricates and polishes the commutator None of the listed here Carbon is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Generators A shunt generator gives its greatest voltage at No load Full load Half full load None of the listed here No load Full load Half full load None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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