(Solved): A simple electromagnetic device for lifting a U-shapped steel beam is shown in the diagram below. T ...
A simple electromagnetic device for lifting a U-shapped steel beam is shown in the diagram below. The U-shapped steel beam being lifted is solid material having a relative permeability of μ1 with a 15cm depth. The magnetic core is also U-shaped with a 15cm depth, but it is built out of high-grade magnetic material having a relative permeability of μ2. Assume that the relative permeability of both materials are infinitive. The coil has a DC resistance of 5Ω, and a DC voltage of 120V is applied to the coil. The air gaps between the core and the steel beam are 5mm. Calculate the MMF, the net reluctance of the magnetic circuit, and the total magnetic flux. Use μ0=4π10−7. The magnetic motive force is The total reluctance is The magnetic flux for this circuit is A.t 1.t/Wb mWb