Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 2.4 At 240 At 24 At 2,400 At 2.4 At 240 At 24 At 2,400 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The left hand rule correlates to Current, magnetic field and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor Current, magnetic field and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200? 8 6 4 12 8 6 4 12 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? 633.8 N/Wb 63380 N/Wb 6338 N/Wb 63.38 N/Wb 633.8 N/Wb 63380 N/Wb 6338 N/Wb 63.38 N/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Ferromagnetic material Ferrits Diamagnetic material Paramagnetic material Ferromagnetic material Ferrits Diamagnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetism left in the iron after exciting field has been removed is known as permeance residual magnetism reluctance susceptance permeance residual magnetism reluctance susceptance ANSWER DOWNLOAD EXAMIANS APP
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