Magnetism and Electromagnetism Which of the following is the unit of magnetic flux density? Tesla Lumens Weber None of the listed here Tesla Lumens Weber None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism An electromagnetic field exists only when there is an increasing current decreasing current voltage current an increasing current decreasing current voltage current 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
Magnetism and Electromagnetism Degaussing is the process of Removal of magnetic impurities Remagnetising metallic parts Removing gases from the materials Demagnetising metallic parts Removal of magnetic impurities Remagnetising metallic parts Removing gases from the materials Demagnetising metallic parts ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will Be excessive Remain Constant Increase Decrease Be excessive Remain Constant Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetism left in the iron after exciting field has been removed is known as reluctance permeance susceptance residual magnetism reluctance permeance susceptance residual magnetism ANSWER DOWNLOAD EXAMIANS APP
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