Magnetism and Electromagnetism The magnetic materials exhibit the property of magnetisation because of orbital motion of electrons spin of nucleus spin of electrons either of these orbital motion of electrons spin of nucleus spin of electrons either of these ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetomotive force is The flow of an electric current The passage of magnetic field through an exciting coil The sum of all currents embraced by one line of magnetic field The voltage across the two ends of exciting coil The flow of an electric current The passage of magnetic field through an exciting coil The sum of all currents embraced by one line of magnetic field The voltage across the two ends of exciting coil ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The attraction capacity of electromagnet will increase if the Core area increases Core length increases Flux density decreases Flux density increases Core area increases Core length increases Flux density decreases Flux density increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage remains unchanged increases decreases reverses polarity remains unchanged increases decreases reverses polarity ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The ratio of intensity of magnetisation to the magnetisation force is known as Relatice permeability Flux density Susceptibility None of the listed here Relatice permeability Flux density Susceptibility None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil? Remains same Increases Decreases First increases and then decreases depending on the depth of iron in¬sertion Remains same Increases Decreases First increases and then decreases depending on the depth of iron in¬sertion ANSWER DOWNLOAD EXAMIANS APP
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