Magnetism and Electromagnetism The unit for permeability is Wb At/Wb At/m Wb/At × m Wb At/Wb At/m Wb/At × m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A keeper is used to Provide a closed path for flux Amplify flux Restore lost flux Change the direction of magnetic lines Provide a closed path for flux Amplify flux Restore lost flux Change the direction of magnetic lines ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The left hand rule correlates to Current, induced e.m.f. and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, magnetic field and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, magnetic field and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wire-wound core, an increase in current through the coil Decreases the flux density Reverses the flux lines Increases the flux density Causes no change in flux density Decreases the flux density Reverses the flux lines Increases the flux density Causes no change in flux density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The uniform magnetic field is None of the listed here The field of a set of parallel conductors The field of a single conductor The field in which all lines of magnetic flux are parallel and equidistant None of the listed here The field of a set of parallel conductors The field of a single conductor The field in which all lines of magnetic flux are parallel and equidistant ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The attraction capacity of electromagnet will increase if the Flux density increases Flux density decreases Core area increases Core length increases Flux density increases Flux density decreases Core area increases Core length increases ANSWER DOWNLOAD EXAMIANS APP
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