DC Generators The commutator of a dc generator acts as A load A rectifier None of the listed here An amplifier A load A rectifier None of the listed here An amplifier ANSWER DOWNLOAD EXAMIANS APP
DC Generators A separately excited generator as compared to a self-excited generator Has exciting current independent of load current Is amenable to better voltage control Has all above features Is more stable Has exciting current independent of load current Is amenable to better voltage control Has all above features Is more stable 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 Fail to excite 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 ANSWER DOWNLOAD EXAMIANS APP
DC Generators Due to armature reaction, the main pole flux of a dc generator is Weakened as well as distorted None of the listed here Distorted only Weakend only Weakened as well as distorted None of the listed here Distorted only Weakend only ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a practical dc generator, mechanical efficiency is Less than electrical efficiency None of the listed here More than electrical efficiency Equal to electrical efficiency Less than electrical efficiency None of the listed here More than electrical efficiency Equal to electrical efficiency ANSWER DOWNLOAD EXAMIANS APP
DC Generators Open circuited armature coil of a D.C. machine is Indicated by a spark completely around the commutator Identified by the scarring of the commutator segment to which open circuited coil is connected Both of the listed here None of these Indicated by a spark completely around the commutator Identified by the scarring of the commutator segment to which open circuited coil is connected Both of the listed here None of these ANSWER DOWNLOAD EXAMIANS APP
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