DC Generators The real working part of a dc machine is the ______ Field winding None of the listed here Commutator Armature winding Field winding None of the listed here Commutator Armature winding ANSWER DOWNLOAD EXAMIANS APP
DC Generators As a result of armature reaction, the reduction in the total mutual air gap flux in a D.C. generator is approximately 40 percent 5 percent 25 percent 10 percent 40 percent 5 percent 25 percent 10 percent ANSWER DOWNLOAD EXAMIANS APP
DC Generators The bearings used to support the rotor shafts are generally Bush bearings Ball bearings Magnetic bearings Needle bearings Bush bearings Ball bearings Magnetic bearings Needle bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the value of shunt field resistance of a shunt generator is greater than the critical resistance, the generator will Excite to full voltage Excite to one half of full voltage None of the listed here Fail to excite Excite to full voltage Excite to one half of full voltage None of the listed here Fail to excite ANSWER DOWNLOAD EXAMIANS APP
DC Generators Inter-pole flux should be sufficient to Neutralize the commutating self induced e.m.f. Neutralize the armature reaction flux None of these Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil Neutralize the commutating self induced e.m.f. Neutralize the armature reaction flux None of these Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature winding of a dc machine is place on the rotor to ______ Reduce losses Reduce armature reaction Save iron Facilitate commutation Reduce losses Reduce armature reaction Save iron Facilitate commutation ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS