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Chapter 2 Question A toroidal core of relative permeability 1000 has a mean diameter of 300...
A toroidal core has distributed air-gaps that make the relative permeability ur equal to 75. The...
A toroidal core has distributed air-gaps that make the relative permeability ur equal to 75. The cross-sectional area is 0.395 cm2 and the mean path length is 5.78cm. Calculate the number of turns required to obtain an inductance of 50uH.
Question 7 A magnetic core is shown in Figure 1. Relative permeability of the core is...
Question 7 A magnetic core is shown in Figure 1. Relative permeability of the core is 14 = 2000. Total number of winding turns in the left winding is NL = 100 and in the right winding is Nr = 10. Assume that the core cross section is uniform and the combined length of all air-gaps is much smaller than the dimensions of the core cross-section. Calculate the following: a) The magnetomotive force in the core if i = 2...
15 marks] B. A toroidal core with a mean diameter of 200 mm and a cross-sectional area of 800 mm has an air gap of length 1.1 mm cut in it Fringing and leakage of flux around the air gap may be negle...
15 marks] B. A toroidal core with a mean diameter of 200 mm and a cross-sectional area of 800 mm has an air gap of length 1.1 mm cut in it Fringing and leakage of flux around the air gap may be neglected (i) Determine the current required in a coil of 1100 turns to produce a flux density of 1 T The relative permeability , of the core material (iron) may be assumed to be 3000 for this level...
EO Vuy vvvvvvvv NTurns 93 The relative permeability of the core material is 3500, and the...
EO Vuy vvvvvvvv NTurns 93 The relative permeability of the core material is 3500, and the average length of the core is 52cm as the cross- section of the core is 64cm2. The core is uniform of cross-section (all limbs have the same cross-section). There are 80 turns on the coil. Answer the following questions, 1) The reluctance of the core (AT/Wb) 2) Find the flux density (T) of the core if the current į in the coil is 0.75...
Refer to the Figure 3. The core has a relative permeability of 5,000. The peak(maximum) flux...
Refer to the Figure 3. The core has a relative permeability of 5,000. The peak(maximum) flux density in the core is 1.6T (i.e, the material = 1.6T).The magnetic material is otherwise linear. The dimensions are: x = 20cm, d = 30cm, and the outside diameter is 160cm. Determine the following: 17. If the winding has N,=50 turns, determine the inductance of the winding. 18. If the winding has N-50 turns, determine the maximum rms voltage that can be applied to...
how can I solve the following magnetic circuit? The iron core shown in Figure 15.13(a) has a cross section of 2 cm by 2 cm and a relative permeability of 1000. The coil has 500 turns and carri...
how can I solve the following magnetic circuit?
The iron core shown in Figure 15.13(a) has a cross section of 2 cm by 2 cm and a relative permeability of 1000. The coil has 500 turns and carries a current of i 2 A. Find the flux density in each air gap. tad in rioure 15 13hi First we compute the -_-10 cm-ㄧ 커←_-10 cm cITI Gap b 10cm 0.5 cm emGap
The iron core shown in Figure 15.13(a) has...
Consider the core given in Fig.1. Relative permeability of the core material is 2000. a) What...
Consider the core given in Fig.1. Relative permeability of the core material is 2000. a) What should be the coil current to achive a flux density of 2T when x-0. State your assumptions in the calculations b) Current in the coil is kept constant at the value found in part (a) as the armature moves to x-2 mm. What is the flux density when x-2 mm? alculate the energy stored in the magnetic circuit when x-0 and current in part...
1. (a) The C core and I core as shown in the below figure have a...
1. (a) The C core and I core as shown in the below figure have a uniform cross-section of 5mm x 5mm. (i) If both cores have a relative permeability ur of 1000, calculate the reluctance when both cores are attached to each other to form a rectangular core. (ii) When a coil of 40 turns is wound around the above rectangular core, calculate the corresponding inductance. (b) The cores described in part (a) are now assembled with a non-magnetic...
Magnetism and electromagnetism (9 Marks) Q2. A steel ring has a mean diameter of 20 cm...
Magnetism and electromagnetism
(9 Marks) Q2. A steel ring has a mean diameter of 20 cm and a cross-section of 25 car and a radial air gap 0.8 mm cut across it. When excited by a current of l A through a coil of 1000 turns wound on the ring core, it produces an air gap flux of /mWb. Calculate: (i) the total reluctance of the magnetic circuit. (ii) the relative permeability of steel. (4 Marks)
An electromagnet is made of a high permeability ferromagnetic core and a coil. The coil current1A....
An electromagnet is made of a high permeability ferromagnetic core and a coil. The coil current1A. The electromagnet is just above a fixed ferromagnetic bar. The structural dimensions are length L = 102 cm, cross section area A 4 cm2, and gap g 1cm. The relative permeability values are rc rb 10,000 in the core and bar, respectively, and prg 1 and gap. Ignore leaks and fringe effect. Determine the following: 1. Name of the course the recruiter was referring...
Question 7 A magnetic core is shown in Figure 1. Relative permeability of the core is 14 = 2000. Total number of winding turns in the left winding is NL = 100 and in the right winding is Nr = 10. Assume that the core cross section is uniform and the combined length of all air-gaps is much smaller than the dimensions of the core cross-section. Calculate the following: a) The magnetomotive force in the core if i = 2...
15 marks] B. A toroidal core with a mean diameter of 200 mm and a cross-sectional area of 800 mm has an air gap of length 1.1 mm cut in it Fringing and leakage of flux around the air gap may be neglected (i) Determine the current required in a coil of 1100 turns to produce a flux density of 1 T The relative permeability , of the core material (iron) may be assumed to be 3000 for this level...
EO Vuy vvvvvvvv NTurns 93 The relative permeability of the core material is 3500, and the average length of the core is 52cm as the cross- section of the core is 64cm2. The core is uniform of cross-section (all limbs have the same cross-section). There are 80 turns on the coil. Answer the following questions, 1) The reluctance of the core (AT/Wb) 2) Find the flux density (T) of the core if the current į in the coil is 0.75...
Refer to the Figure 3. The core has a relative permeability of 5,000. The peak(maximum) flux density in the core is 1.6T (i.e, the material = 1.6T).The magnetic material is otherwise linear. The dimensions are: x = 20cm, d = 30cm, and the outside diameter is 160cm. Determine the following: 17. If the winding has N,=50 turns, determine the inductance of the winding. 18. If the winding has N-50 turns, determine the maximum rms voltage that can be applied to...
how can I solve the following magnetic circuit?
The iron core shown in Figure 15.13(a) has a cross section of 2 cm by 2 cm and a relative permeability of 1000. The coil has 500 turns and carries a current of i 2 A. Find the flux density in each air gap. tad in rioure 15 13hi First we compute the -_-10 cm-ㄧ 커←_-10 cm cITI Gap b 10cm 0.5 cm emGap
The iron core shown in Figure 15.13(a) has...
Consider the core given in Fig.1. Relative permeability of the core material is 2000. a) What should be the coil current to achive a flux density of 2T when x-0. State your assumptions in the calculations b) Current in the coil is kept constant at the value found in part (a) as the armature moves to x-2 mm. What is the flux density when x-2 mm? alculate the energy stored in the magnetic circuit when x-0 and current in part...
1. (a) The C core and I core as shown in the below figure have a uniform cross-section of 5mm x 5mm. (i) If both cores have a relative permeability ur of 1000, calculate the reluctance when both cores are attached to each other to form a rectangular core. (ii) When a coil of 40 turns is wound around the above rectangular core, calculate the corresponding inductance. (b) The cores described in part (a) are now assembled with a non-magnetic...
Magnetism and electromagnetism
(9 Marks) Q2. A steel ring has a mean diameter of 20 cm and a cross-section of 25 car and a radial air gap 0.8 mm cut across it. When excited by a current of l A through a coil of 1000 turns wound on the ring core, it produces an air gap flux of /mWb. Calculate: (i) the total reluctance of the magnetic circuit. (ii) the relative permeability of steel. (4 Marks)
An electromagnet is made of a high permeability ferromagnetic core and a coil. The coil current1A. The electromagnet is just above a fixed ferromagnetic bar. The structural dimensions are length L = 102 cm, cross section area A 4 cm2, and gap g 1cm. The relative permeability values are rc rb 10,000 in the core and bar, respectively, and prg 1 and gap. Ignore leaks and fringe effect. Determine the following: 1. Name of the course the recruiter was referring...
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