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Suppose we have a conductive bar moving along a pair of conductive rails as in Figure 4.12, only now the magnetic flux density is
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Fundamentals of Electromagnetics with Engineering Applications
- A magnetic core with an air gap is shown below. For a relative permeability is 9500, and the space free permeability is 4Ttx107 H/m. Find the reluctance of the left leg and the top side of the core. Ignore the gap in your calculations. 10 cm 0.1 cm gap 20 cm 5 cm 5 cm 40 cm 5 cm core depth = 10 cm Select one: a. Rjeft = 3.770 KA.t./Wb , Rtop = 4.607 KA.t/Wb b. None c. Rieft = 377.0 A.t./Wb , Rtop = 460.7 A.t/Wb d. Rjeft = 325.1 A.t./Wb , Rtop = 402.3 A.t/Wb ----------arrow_forwardFind the magnetic flux density when a point from a finite current length element of current 0.5A and radius 100 nm. 2.0 0.0 1.0 none of the above 0.5arrow_forward2. A current of I = 3 [A] flows over the N = 200 winding wire as given in the figure below. The cross-sectional area of the core is S = 10-3 [m²] and its relative magnetic permeability is given as μ = 5000. Calculate each magnetic flux. -0.2 (m)- 2 (mm) -0.2 (m) 0.24 (m)arrow_forward
- A magnetic core with an air gap is shown below. For a relative permeability is 3500, and the space free permeability is 4x10-7 H/m. Find the reluctance of the left leg and the top side of the core. 5 cm gap 0.15 cm Select one: a. 40 cm N core depth = 10 cm O b. Rleft = 13.642 C. None 5 cm 1 5 cm 20 cm 15 cm Rleft = 1364.2 A.t./Wb, Rtop = 2045.5 A.t/Wb KA.t./Wb, Rtop = 20.455 KA.t/Wb d. Rleft = 20.455 KA.t./Wb, Rtop = 13.642 KA.t/Wb Oe. Rleft = 1.36 KA.t./Wb, Rtop = 2.05 KA.t/Wbarrow_forwardQ4. Consider the below diagram. Derive the magnetic vector potential for loop A and then Find the Mutual inductance (M AB) between the wire. lo mAmp 5 cm toop A Foop Barrow_forwardFigure 1 shows a ferromagnetic core with a relative permeability of 1850, the depth of the core is 10 cm. The air gap on the core is 0.2 cm with effective area 5 % larger than their physical size due to fringing effects. Given the number of turns N = 500 and current i = 2 x, where x is the last digit of your student ID (example: EEE1705590, then i = 20 A): (a) Find the total reluctance of the core and air gap. [CLO1-PL01:C2] (b) Find the flux density of the air gap. [CLO1-PLO1:C2] 13 cm 23 cm 9 cm 5.6 сm Air gap 31 cm N turns 7 cm Figure 1arrow_forward
- a conductor moving with a velocity of 5.0 m/s to the right in the presence of a magnetic field. The flux density is 0.5 T into the page, and the wire is 1.0 m in length, oriented as shown. What are the magnitude resulting induced voltage?arrow_forward4. A given magnetic circuit has a magnetic field intensity of 400 AT/m. If the length of the magnetic path is doubled maintaining the same magnetomotive force, how much is the new magnetic field intensity?arrow_forwardB. For the following magnetic circuit, the flux passing through the core is 1.32 mWb, the cross section of the core is 3 cm by 4 cm, the laminated section has a stacking factor of 0.9, and the gap is 1 mm. Determine the flux density in each section. Neglect fringing d N turns Cast iron Air gap Laminated sheet steelarrow_forward
- A magnetic core with an air gap is shown below. For a relative permeability is 4500, and the space free permeability is 4rtx10-7 H/m. Find 10 cm 30 cm |5 cm the reluctance of the left leg and the top side of the core. 1000 Turns 0.05 cm i Depth -5 cm Select one: O a. Rjeft = 123.8 A.t./Wb , Rtop = 265.0 A.t//Wb b. Rjeft = 1238 A.t./Wb , Rtop = 2650 A.t/Wb c. Rleft = 12.38 KA.t./Wb , Rtop = 26.5 KA.t/Wb O d. None Ts cm|arrow_forwardThrough a conducting loop, the magnetic flux changes with time as 4,=6²- 18r' Tm². When does the induced emf reach to its maximum value in magnitude between t=0 and t=2 s? 1 - O A) 1 s B) 0 C) 1.5 s O D) 2 s O E) 0.5 sarrow_forwardQuestion Three: Magnetic Force between wires. Three long parallel wires are 5 cm from one another. (Looking along them, they are at three corners of an equilateral triangle.) The current in each wire is 10.00 A, but its direction in wire M is opposite to that in wires N and P. Determine the magnetic force per unit length on each wire due to the other two. M sem 5cmarrow_forward
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