DC Generators Magnetic field in a D.C. generator is produced by None of these Electromagnets Both (A) and (B) Permanent magnets None of these Electromagnets Both (A) and (B) Permanent magnets ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a dc machine, the number of commutator segment is equal to Number of coils Twice the number of poles None of the listed here Numbers of conductors Number of coils Twice the number of poles None of the listed here Numbers of conductors ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a cummulative compounded generator the shunt and series fields ______ each other. Sometime aid, sometime oppose Aid None of the listed here Oppose Sometime aid, sometime oppose Aid None of the listed here Oppose ANSWER DOWNLOAD EXAMIANS APP
DC Generators The greatest eddy current loss occurs in the _____ of a dc machine. Field poles Armature Yoke Commutating poles Field poles Armature Yoke Commutating poles ANSWER DOWNLOAD EXAMIANS APP
DC Generators Permeance is the reciprocal of Reluctance Ampere turns Resistance Flux density Reluctance Ampere turns Resistance Flux density ANSWER DOWNLOAD EXAMIANS APP
DC Generators If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to increase the speed of primemover check armature insulation resistance increase the field resistance reverse the field connections increase the speed of primemover check armature insulation resistance increase the field resistance reverse the field connections ANSWER DOWNLOAD EXAMIANS APP
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