Magnetism and Electromagnetism The attraction capacity of electromagnet will increase if the Core area increases Flux density increases Core length increases Flux density decreases Core area increases Flux density increases Core length increases Flux density decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The retentivity of material is useful for the construction of Permanent magnets Electromagnets Transformers Non-magnetic substances Permanent magnets Electromagnets Transformers Non-magnetic substances ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Degaussing is the process of Removal of magnetic impurities Demagnetising metallic parts Removing gases from the materials Remagnetising metallic parts Removal of magnetic impurities Demagnetising metallic parts Removing gases from the materials Remagnetising 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 Increases None of the listed here Remain same Decreases Increases None of the listed here Remain same Decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetic reluctance of a material Does not vary with increasing cross-sectional area of material Any of the listed here Decreases with increasing cross sectional area of material Increases with increasing cross-sec-tional area of material Does not vary with increasing cross-sectional area of material Any of the listed here Decreases with increasing cross sectional area of material Increases with increasing cross-sec-tional area of material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be 0.24 N 240 N 24 N 2.4 N 0.24 N 240 N 24 N 2.4 N ANSWER DOWNLOAD EXAMIANS APP
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