Magnetism and Electromagnetism The magnetomotive force is The passage of magnetic field through an exciting coil The voltage across the two ends of exciting coil The flow of an electric current The sum of all currents embraced by one line of magnetic field The passage of magnetic field through an exciting coil The voltage across the two ends of exciting coil The flow of an electric current The sum of all currents embraced by one line of magnetic field ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength? 250 AT/m 25 AT/m 0.25 AT/m 2500 AT/m 250 AT/m 25 AT/m 0.25 AT/m 2500 AT/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials. triangular None of the listed here rectangular circular triangular None of the listed here rectangular circular ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetising steel is normals difficult because it corrodes easily it has high permeability it has low permeability it has high specific gravity it corrodes easily it has high permeability it has low permeability it has high specific gravity ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 240 At 2.4 At 2,400 At 24 At 240 At 2.4 At 2,400 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The main constituent of permalloy is Cobalt Nickel Tungsten Chromium Cobalt Nickel Tungsten Chromium ANSWER DOWNLOAD EXAMIANS APP
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