DC Generators In a D.C. generator the critical resistance refers to the resistance of Brushes Armature Load Field Brushes Armature Load Field ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Excessive spring pressure All of these Abrasion from dust Rough commutator bars Excessive spring pressure All of these Abrasion from dust Rough commutator bars ANSWER DOWNLOAD EXAMIANS APP
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 In a dc generator, the eddy current power loss is None of the listed here Directly proportional to thickness of each lamination Inversely proprtional to thickness of each lamination Directly proportional to sqaure of thickness of each lamination None of the listed here Directly proportional to thickness of each lamination Inversely proprtional to thickness of each lamination Directly proportional to sqaure of thickness of each lamination ANSWER DOWNLOAD EXAMIANS APP
DC Generators The efficiency of a dc generator means its Electrical efficiency None of the listed here Overall efficiency Mechanical efficiency Electrical efficiency None of the listed here Overall efficiency Mechanical efficiency ANSWER DOWNLOAD EXAMIANS APP
DC Generators When two D.C. generators are running in parallel an equalizer bar is used So that the two identical machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both the machines To increase the generated e.m.f. To increase the series flux So that the two identical machines will pass approximately equal currents to the load To reduce the combined effect of armature reaction of both the machines To increase the generated e.m.f. To increase the series flux ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS