DC Generators The efficiency of a dc generator means its Electrical efficiency None of the listed here Overall efficiency Mechanical efficiency Electrical efficiency None of the listed here Overall efficiency Mechanical efficiency 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 increase the field resistance check armature insulation resistance reverse the field connections increase the speed of primemover increase the field resistance check armature insulation resistance reverse the field connections ANSWER DOWNLOAD EXAMIANS APP
DC Generators Carbon brushes are used in a dc machine because _______ Carbon is cheap Contact resistance is decreased None of the listed here Carbon lubricates and polishes the commutator Carbon is cheap Contact resistance is decreased None of the listed here Carbon lubricates and polishes the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Generators A separately excited generator as compared to a self-excited generator Is more stable Has all above features Is amenable to better voltage control Has exciting current independent of load current Is more stable Has all above features Is amenable to better voltage control Has exciting current independent of load current ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field coil of dc generator are usually made of Cast iron Copper Mica Carbon Cast iron Copper Mica Carbon ANSWER DOWNLOAD EXAMIANS APP
DC Generators Stray losses consist of Mechanical and copper losses Magnetic and mechanical losses None of the listed here Magnetic and copper losses Mechanical and copper losses Magnetic and mechanical losses None of the listed here Magnetic and copper losses ANSWER DOWNLOAD EXAMIANS APP
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