DC Generators The voltage drop for which of the following types of brush can be expected to be least? Metal graphite brushes Carbon brushes None of these Graphite brushes Metal graphite brushes Carbon brushes None of these Graphite brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a long shunt compound wound generator , the shunt field is connected in parallel with Parallel combination of armature and series field Series combination of armature and series field Series field Armature Parallel combination of armature and series field Series combination of armature and series field Series field Armature 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 Shifting of axis of brushes Interpoles Dummy coils Compensating winding Shifting of axis of brushes Interpoles Dummy coils Compensating winding 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 None of the listed here Excite to one half of full voltage Excite to full voltage Fail to excite None of the listed here Excite to one half of full voltage Excite to full voltage Fail to excite ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. 15 to 25% More than 20% 2% to 5% Less than 0.5 % 15 to 25% More than 20% 2% to 5% Less than 0.5 % 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
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