DC Generators The O. C. C. of a dc generator is also called its_______ characteristic. External Internal No load saturation Performance External Internal No load saturation Performance ANSWER DOWNLOAD EXAMIANS APP
DC Generators The current in armature conductors of a dc machine is ______ Ac Pure dc Pure dc plus pulsating dc Pulsating dc Ac Pure dc Pure dc plus pulsating dc Pulsating dc ANSWER DOWNLOAD EXAMIANS APP
DC Generators The terminal voltage of a series generator is 150 V when the load current is 5 A. If the load current is increased to 10 A, the terminal voltage will be Less than 150 V Greater than 150 V 150 V None of these Less than 150 V Greater than 150 V 150 V None of these ANSWER DOWNLOAD EXAMIANS APP
DC Generators Small dc machines generally have _____ poles. 4 8 2 6 4 8 2 6 ANSWER DOWNLOAD EXAMIANS APP
DC Generators The rapid wear of brushes takes place due to Rough commutator bars Excessive spring pressure All of these Abrasion from dust Rough commutator bars Excessive spring pressure All of these Abrasion from dust ANSWER DOWNLOAD EXAMIANS APP
DC Generators If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be High Small The same as rated voltage Zero High Small The same as rated voltage Zero ANSWER DOWNLOAD EXAMIANS APP