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Considering Figure 4.7, suppose the area of a single loop of the pair is
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Fundamentals of Electromagnetics with Engineering Applications
- A ring of ferromagnetic material has a rectangular section. The inner diameter is 15 cm.The outer diameter is 24 cm. And the thickness is 5 cm. There is a coil of 500 turns wound onthe ring. When the coil has a current of 10 A, the flux in the core is 0.0007 Wb. Theaverage length of the ring is Ln=0.66m Determine:a) The magnetomotive force.b) The intensity of the magnetic field and the flux density.c) Reluctance, permeability and relative permeability.arrow_forwardThree long, parallel, straight wires each carrying a 5.0 A current pass through the vertices of an equilateral triangle (L= 5.0 cm) as shown in the figure below. Currents on wires B and C are out of page while that of wire A is into the page. What is the x and y components of the magnetic field vector at the point of the wire A? Give your answer in µT. B Her birinden 5,0 A akım geçen üç uzun ve birbirine paralel düz tel bir kenarı L=5,0 cm olan bir eşkenar üçgenin köşelerinden geçmektedirler. B ve C tellerinden geçen akım sayfa düzleminden bize doğru, A telinden geçen akım sayfa düzleminden içeri doğrudur. A telinin üstünde manyetik alanın x ve y bileşenleri µT cinsinden nedir? Larrow_forwardConsider the magnetic circuit in Figure. Assuming that the core µ= 1000µo has a uniform cross section of 4 cm2,N= 400 , the flux density in the air gap. 0.2 A L = 42 cm 4 = 0.1 cm 35.4 mwb 60.5 mwb 70.8 mwb Non of Thesearrow_forward
- A long straight wire placed along az -axis carries a current of I = 6 A in the +az direction. The magnetic flux density at a distance r = 5cm from the wire will bearrow_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_forwardA magnetic core with an air gap is shown below. For a relative permeability is 3500, and the space free permeability is 4TTX10-7 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: O a. Rieft = 1251 A.t./Wb , Rtop = 1023 A.t/Wb O b. None O c. Rieft = 12.51 KA.t./Wb , Reop = 10.23 KA.t/Wb O d. Rieft = 125.1 A.t./Wb , Rtop = 102.3 A.t/Wbarrow_forward
- Consider the magnetic circuit in Figure. Assuming that the core µ= 1000µo has a uniform cross section of 4 cm-,N= 200, the flux density in the air gap. 0.2 A| L=42 cm %=0.1 cmarrow_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_forward5. a) According to this figure, if it's possible to create magnetic monopoles in a spherical closed surface, then find out the amount of total magnetic flux. N N N Narrow_forward
- A coil consists of 100 turns of wire in shape of circle placed in the y-z plane. The loop has an area of 1m² Two magnetic fields linking the surface of the loop: The first one is given by: B1 = -10zt? The second one is B2 = 20ãsin(2w)t emf Select one: a. vm = 0 emf O b. emf 2000t %3D O c. m emf --4000.w.cos(2w)t O d. vm 2000t – 4000.w.cos(2w)t emfarrow_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_forward14. 37 Figure 4.62 shows a core made of silicon sheet steel laminations with an air gap of 1.1 mm in the centre limb as shown. The side limbs each have a cross-sectional area of 580 mm². The centre limb has a cross-sectional area of 770 mm². The coil has 3100 turns. Calculate the current in the coil to produce a flux of 0.96 mWb in the air gap. 360 mm I A 12 145 mm 360 mm 191 Figure 4.62: Silicon sheet steel core and magnetic circuit for Question 14arrow_forward
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