Homework Answers
![0 0 a رسم Mr=1000 25mm 30mm 15mm N comm IN=40] 25 mm = 5mm x 5 mm Area of the Core = 25 mm = 25x100 m mean length of the core](http://img.homeworklib.com/questions/59f47460-76e6-11eb-9b97-871a1ef09226.png?x-oss-process=image/resize,w_560)
3. Magnetic Circuit The magnetic circuit shown in the figure is formed by two 'E' cores made of t...
Please explain your answer and clarify your steps
3. Magnetic Circuit The magnetic circuit shown in the figure is formed by two 'E' cores made of two different materials, with air gap g-0.5 mm. The relative permeability of each material is μre11 = 25 30 and 14-e12 = 1620 (consider air permeability equal to vacuum ,-4 T 10-7H/rn). - Calculate the total reluctance of the magnetic circuit. - Assuming the maximum flux density for both materials is Bmax 400 mT,...
3. a. A solenoid consisting of 1500 turns of wire wound on a co-centric core of...
3. a. A solenoid consisting of 1500 turns of wire wound on a co-centric core of length 50cm and diameter 3.7cm is in magnetic circuit of another solenoid of the same length and the number of turns but with diameter of 5cm. Calculate the coupling co-efficient and the total inductance if both of them are connected in series opposing fashion. Assume free space conditions. (12 Marks) b. Briefly discuss the following terms of magneto statics: i. Relative Permeability; (2 Marks)...
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...
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)
Prob.l. A rectangular magnetic core shown in the below Fig, has square cross-section of area 16...
Prob.l. A rectangular magnetic core shown in the below Fig, has square cross-section of area 16 cm". An air-gap of 2 mm is cut across one of its limbs. Find the exciting current needed in the coil having 1000 turns wound on the core to create an airgap mu of 4 m Wb. The relative permeability of the core is 2000. N=1000 2 mm 25 cm - - 20 cm
Solve all parts of Question 1 clearly: Two toroidal solenoids are wound around the same form...
Solve all parts of Question 1 clearly:
Two toroidal solenoids are wound around the same form so that
the magnetic field of one passes through the turns of the other.
Solenoid 1 has 800 turns, and solenoid 2 has 500 turns. When the
current in solenoid 1 is 6.52 A, the average flux through each turn
of solenoid 2 is 0.0320 Wb.
What is the mutual inductance of the pair of solenoids?
When the current in solenoid 2 is 6.52...
2. The magnetic circuit of Fig. 1 consists of rings of magnetic material in a stack...
2. The magnetic circuit of Fig. 1 consists of rings of magnetic material in a stack of height h. The rings have inner radius Ri and outer radius Ro. Assume that the iron is of infinite permeability (μ → x) and neglect the effects of magnetic leakage and fringing Ri N turns For Ri-3.2 cm, Roー4.1 cm, ћ-1.8 cm, g = 0.15 cm, N-72 turns, calculate a. The mean core length le and the core corss-sectional area Ac. b. The...
A three-legged circular core is shown in figure below. The winding on the middle leg of the core (𝑁) has 500 turns. The depth of the core is 10 cm. If the dimensions are as shown, then
Question: 01 (9 Points)
A three-legged circular core is shown in figure below. The winding on the middle leg of
the core (𝑁) has 500 turns. The depth of the core is 10 cm. If the dimensions are as
shown, then
(a) Determine the total reluctance of the given core when μr = 700 and constant.Hints:
1) Solve it like a regular electrical circuit using series/parallel concept
2) Flow of flux in magnetic circuits is same as flow of current...
Could you solve a part. Please please could you please solve i and ii could please clearly and co...
Could you solve a part. Please please could you please solve i and
ii could please clearly and correctly
Length of plunger h Magnetie plunger Lossless N-turn coil Magnetic core Figure 2: Figure for Question 3. 3. (60 points) In the magnetic circuit in Figure 2, the moveable plunger of height h noves between two parallel core columns of width d, creating air gaps of lengths gi and 92 as shown (h 9.9 f the plunger position z where 0...
The two coils A and B wound coaxially on an insulating cylinder. It will be evident...
The two coils A and B wound coaxially on an insulating cylinder. It will be evident that the fluxes produced by a current i through the two coils are in the same direction, and the coils are said to be cumulatively coupled. If the direction of the current in B relative to that in A is reverse, then coils are said to be differential coupling. Suppose A and B to have self- inductances LA and LB henrys respectively and a...
Please explain your answer and clarify your steps
3. Magnetic Circuit The magnetic circuit shown in the figure is formed by two 'E' cores made of two different materials, with air gap g-0.5 mm. The relative permeability of each material is μre11 = 25 30 and 14-e12 = 1620 (consider air permeability equal to vacuum ,-4 T 10-7H/rn). - Calculate the total reluctance of the magnetic circuit. - Assuming the maximum flux density for both materials is Bmax 400 mT,...
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...
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)
Prob.l. A rectangular magnetic core shown in the below Fig, has square cross-section of area 16 cm". An air-gap of 2 mm is cut across one of its limbs. Find the exciting current needed in the coil having 1000 turns wound on the core to create an airgap mu of 4 m Wb. The relative permeability of the core is 2000. N=1000 2 mm 25 cm - - 20 cm
Solve all parts of Question 1 clearly:
Two toroidal solenoids are wound around the same form so that
the magnetic field of one passes through the turns of the other.
Solenoid 1 has 800 turns, and solenoid 2 has 500 turns. When the
current in solenoid 1 is 6.52 A, the average flux through each turn
of solenoid 2 is 0.0320 Wb.
What is the mutual inductance of the pair of solenoids?
When the current in solenoid 2 is 6.52...
2. The magnetic circuit of Fig. 1 consists of rings of magnetic material in a stack of height h. The rings have inner radius Ri and outer radius Ro. Assume that the iron is of infinite permeability (μ → x) and neglect the effects of magnetic leakage and fringing Ri N turns For Ri-3.2 cm, Roー4.1 cm, ћ-1.8 cm, g = 0.15 cm, N-72 turns, calculate a. The mean core length le and the core corss-sectional area Ac. b. The...
Could you solve a part. Please please could you please solve i and
ii could please clearly and correctly
Length of plunger h Magnetie plunger Lossless N-turn coil Magnetic core Figure 2: Figure for Question 3. 3. (60 points) In the magnetic circuit in Figure 2, the moveable plunger of height h noves between two parallel core columns of width d, creating air gaps of lengths gi and 92 as shown (h 9.9 f the plunger position z where 0...
The two coils A and B wound coaxially on an insulating cylinder. It will be evident that the fluxes produced by a current i through the two coils are in the same direction, and the coils are said to be cumulatively coupled. If the direction of the current in B relative to that in A is reverse, then coils are said to be differential coupling. Suppose A and B to have self- inductances LA and LB henrys respectively and a...
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