DC Generators The yoke of a dc machine is made of Soft iron Cast steel Aluminum Silicon steel Soft iron Cast steel Aluminum Silicon steel ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator the critical resistance refers to the resistance of Brushes Load Armature Field Brushes Load Armature Field ANSWER DOWNLOAD EXAMIANS APP
DC Generators The voltage drop for which of the following types of brush can be expected to be least? Carbon brushes Graphite brushes None of these Metal graphite brushes Carbon brushes Graphite brushes None of these Metal graphite brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following will not prevent a self excited shunt generator from building upto its full voltage? Speed too high Wrong direction of rotation No residual magnetism Open field Speed too high Wrong direction of rotation No residual magnetism Open field ANSWER DOWNLOAD EXAMIANS APP
DC Generators The coupling field between electrical and mechanical systems of a dc machine is ______ Electric field Both electrical and magnetic fields None of the listed here Magnetic field Electric field Both electrical and magnetic fields None of the listed here Magnetic field ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator in order to reduce sparking at brushes, the self-induced e.m.f. in the coil is neutralized by all of the following except Dummy coils Compensating winding Shifting of axis of brushes Interpoles Dummy coils Compensating winding Shifting of axis of brushes Interpoles ANSWER DOWNLOAD EXAMIANS APP
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