DC Generators Brushes of D.C. machines are made of All of above Soft copper Carbon Hard copper All of above Soft copper Carbon Hard copper ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Abrasion from dust Rough commutator bars All of these Excessive spring pressure Abrasion from dust Rough commutator bars All of these Excessive spring pressure ANSWER DOWNLOAD EXAMIANS APP
DC Generators A shunt generator gives its greatest voltage at No load Half full load Full load None of the listed here No load Half full load Full load None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators Magnetic field in a D.C. generator is produced by None of these Electromagnets Both (A) and (B) Permanent magnets None of these Electromagnets Both (A) and (B) Permanent magnets ANSWER DOWNLOAD EXAMIANS APP
DC Generators Due to armature reaction, the main pole flux of a dc generator is Distorted only None of the listed here Weakened as well as distorted Weakend only Distorted only None of the listed here Weakened as well as distorted Weakend only ANSWER DOWNLOAD EXAMIANS APP
DC Generators The commutator of a dc generator acts as A load A rectifier None of the listed here An amplifier A load A rectifier None of the listed here An amplifier ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS