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QUESTION 2 a) Given a magnetic circuit as shown in Figure Q2 where its core is...
4. Referring to Figure 26.0, a magnetic circuit core is made of stalloy and has and...
4. Referring to Figure 26.0, a magnetic circuit core is made of stalloy and has and air gap of 1.2 mm. An exciter coil of 400-turn is wound at the center limb. The center limb cross sectional area is 1600 mm and the cross sectional area of both sides of limb is 1000mm?. Calculate the current required to establish a flux of 1000 uWb in the air gap. Neglect fringing effect and flux leakage. The B-H curve for stalloy is...
6) Figure Q4(b) shows a coils of 200 turns. The coil is uniformly wound around a...
6) Figure Q4(b) shows a coils of 200 turns. The coil is uniformly wound around a wooden ring with a mean circumference of 600mm and cross-section area of 500mm%. The current flowing into the call is 4A. (Permeability of free space fle = 4ex 10' Hm'. Calculate: L. the magnetic field strength (2 marks) flux density (1 marks) total flux (1 marks) turn I meter Figure Q4 (b) A magnetic circuit made of cast steel is arranged as in Figure...
b) A portion of a solenoid is shown as in Figure Q3(b). The magnetic circuit comprises...
b) A portion of a solenoid is shown as in Figure Q3(b). The magnetic circuit comprises of cast iron yoke, sheet steel plunger, cast steel plunger and air gaps. The yoke and plunger have a cross section area of 4.8x10 m´and 4.5x10m respectively. A coil is wound on the center of the yoke. The effective length of the cast iron yake, sheet steel plunger and cast steel plunger are la = 0.25 m; 4 = 0.12 m and l =...
Given a magnetic circuit in Fig. , with an air-gap and two windings wound on the...
Given a magnetic circuit in Fig. , with an air-gap and two windings wound on the limbs. Air gap hi Ni turns N2 turns At -Magnetic core permeability J mean core length le cross-sectional area Ac
[Magnetic circuits – 20 points] A two-legged magnetic core with an airgap is shown in the...
[Magnetic circuits – 20 points] A two-legged magnetic core with an airgap is shown in the below figure. The cross-sectional area of the core is A. = 20 cm?, the mean length of the core is l. =80 cm, and the length of the airgap is 0.06 cm. The number of turns on the coil is 200. The relative permeability of the core can be assumed to be constant and equal to 2000. The fringing effect causes a 6% increase...
3. [Magnetic circuits – 20 points] A two-legged magnetic core with an airgap is shown in...
3. [Magnetic circuits – 20 points] A two-legged magnetic core with an airgap is shown in the below figure. The cross-sectional area of the core is A = 20 cm², the mean length of the core is l. =80 cm, and the length of the airgap is 0.06 cm. The number of turns on the coil is 200. The relative permeability of the core can be assumed to be constant and equal to 2000. The fringing effect causes a 6%...
02 (10 р.): The magnetic circuit shown is made of laminated core of cast steel. Each...
02 (10 р.): The magnetic circuit shown is made of laminated core of cast steel. Each lamination is a square with the dimensions shown in the figure (not to scale). The gap length, g, is 0.1 cm, the cross section of the core is a square. The coil has 750 turns. (a) Calculate the needed current in the coil to produce a flux of 2.16 m Wb in the airgap. (b) Answer question (a) assuming a stacking factor of 0.5455....
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...
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
94 Exercise :4.A square magnetic core Figure :4. has four 0.5 mm air gaps. The core...
94 Exercise :4.A square magnetic core Figure :4. has four 0.5 mm air gaps. The core material has a relative permeability of us = 800 and a coil of 1400 turns is wound around it. The core has a square cross-sectional area of dimensions 4 cm and a magnetic path length (including the air gaps) is 20 cm. A = 4 cm 2 N = 1400 4 Air gaps = 0.5 mm each Figure : 4. = 20 cm including...
4. Referring to Figure 26.0, a magnetic circuit core is made of stalloy and has and air gap of 1.2 mm. An exciter coil of 400-turn is wound at the center limb. The center limb cross sectional area is 1600 mm and the cross sectional area of both sides of limb is 1000mm?. Calculate the current required to establish a flux of 1000 uWb in the air gap. Neglect fringing effect and flux leakage. The B-H curve for stalloy is...
6) Figure Q4(b) shows a coils of 200 turns. The coil is uniformly wound around a wooden ring with a mean circumference of 600mm and cross-section area of 500mm%. The current flowing into the call is 4A. (Permeability of free space fle = 4ex 10' Hm'. Calculate: L. the magnetic field strength (2 marks) flux density (1 marks) total flux (1 marks) turn I meter Figure Q4 (b) A magnetic circuit made of cast steel is arranged as in Figure...
b) A portion of a solenoid is shown as in Figure Q3(b). The magnetic circuit comprises of cast iron yoke, sheet steel plunger, cast steel plunger and air gaps. The yoke and plunger have a cross section area of 4.8x10 m´and 4.5x10m respectively. A coil is wound on the center of the yoke. The effective length of the cast iron yake, sheet steel plunger and cast steel plunger are la = 0.25 m; 4 = 0.12 m and l =...
Given a magnetic circuit in Fig. , with an air-gap and two windings wound on the limbs. Air gap hi Ni turns N2 turns At -Magnetic core permeability J mean core length le cross-sectional area Ac
[Magnetic circuits – 20 points] A two-legged magnetic core with an airgap is shown in the below figure. The cross-sectional area of the core is A. = 20 cm?, the mean length of the core is l. =80 cm, and the length of the airgap is 0.06 cm. The number of turns on the coil is 200. The relative permeability of the core can be assumed to be constant and equal to 2000. The fringing effect causes a 6% increase...
3. [Magnetic circuits – 20 points] A two-legged magnetic core with an airgap is shown in the below figure. The cross-sectional area of the core is A = 20 cm², the mean length of the core is l. =80 cm, and the length of the airgap is 0.06 cm. The number of turns on the coil is 200. The relative permeability of the core can be assumed to be constant and equal to 2000. The fringing effect causes a 6%...
02 (10 р.): The magnetic circuit shown is made of laminated core of cast steel. Each lamination is a square with the dimensions shown in the figure (not to scale). The gap length, g, is 0.1 cm, the cross section of the core is a square. The coil has 750 turns. (a) Calculate the needed current in the coil to produce a flux of 2.16 m Wb in the airgap. (b) Answer question (a) assuming a stacking factor of 0.5455....
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...
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
94 Exercise :4.A square magnetic core Figure :4. has four 0.5 mm air gaps. The core material has a relative permeability of us = 800 and a coil of 1400 turns is wound around it. The core has a square cross-sectional area of dimensions 4 cm and a magnetic path length (including the air gaps) is 20 cm. A = 4 cm 2 N = 1400 4 Air gaps = 0.5 mm each Figure : 4. = 20 cm including...
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