Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 2.4 At 240 At 2,400 At 24 At 2.4 At 240 At 2,400 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The use of permanent magnets is. not made in Transformers Energy meters None of the listed here Loud speakers Transformers Energy meters None of the listed here Loud speakers ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Ferrites Diamagnetic materials Paramagnetic materials Ferromagnetic materials Ferrites Diamagnetic materials Paramagnetic materials Ferromagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 300 AT 30 AT 0.3 AT 3 AT 300 AT 30 AT 0.3 AT 3 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permeable substance is one through which the magnetic lines of force can pass very easily which is a bad conductor which is a strong magnet which is a good conductor through which the magnetic lines of force can pass very easily which is a bad conductor which is a strong magnet which is a good conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetic reluctance of a material Does not vary with increasing cross-sectional area of material Decreases with increasing cross sectional area of material Any of the listed here Increases with increasing cross-sec-tional area of material Does not vary with increasing cross-sectional area of material Decreases with increasing cross sectional area of material Any of the listed here Increases with increasing cross-sec-tional area of material ANSWER DOWNLOAD EXAMIANS APP
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