Magnetism and Electromagnetism What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb? 600 T 600 T 6 T 6,000 T 600 T 600 T 6 T 6,000 T ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wirewound core, an increase in current through the coil causes no change in flux density increases the flux density decreases the flux density reverses the flux lines causes no change in flux density increases the flux density decreases the flux density reverses the flux lines ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Core of an electromagnet should have Both low coercivity and high susceptibility Low coercivity None of the listed here High susceptibility Both low coercivity and high susceptibility Low coercivity None of the listed here High susceptibility ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is proportional to distance between the conductors proportional to X inversely proportional to I proportional to 7 proportional to distance between the conductors proportional to X inversely proportional to I proportional to 7 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 240 N 2.4 N 0.24 N 24 N 240 N 2.4 N 0.24 N 24 N ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m? 1111 At/Wb 111 At/Wb 1 At/Wb 11 At/Wb 1111 At/Wb 111 At/Wb 1 At/Wb 11 At/Wb ANSWER DOWNLOAD EXAMIANS APP
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