Homework Answers
b.Reluctance
The opposition to magnetic lines of force Is called reluctance..
Permeability is resistance of material against formation of magnetic field..
Impedance is combination of resistance along with reactance where as admittance is inverse of impedance...
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The opposition to Magnetic lines of force is called. a. Permeability b. Reluctance. O c. Admittance...
If a material is easily magnetized, it would be said to have : O a. High...
If a material is easily magnetized, it would be said to have : O a. High Reluctance. b. High Impedance. O c. High Admittance O d. High Permeability
Electrical circuits Determine: A) Magnetomotive force B) Reluctance C) Current D) What is the air gap...
Electrical circuits
Determine:
A) Magnetomotive force
B) Reluctance
C) Current
D) What is the air gap flux density, with 3.8% E.M (Marginal
Effect electric machines). ?
Data:
- Magnetic core Permeability μr=4800
- Flow 0.045 WB
E) Draw the equivalent magnetic circuit
Solve step by step
10 cm. 20 cm Cn 15 cm 500 Turns of Wire 15 Cm 400 Turns of Wire 15 cm 0.05 cm Thickness: 3.5cm
Magnetic lines of force which oppose each other can be created by: a. Parallel conductors carrying...
Magnetic lines of force which oppose each other can be created by: a. Parallel conductors carrying current in the same Direction O b. Conductors carrying no current OC. Parallel conductors carrying current in Opposite Direction d. Parallel conductors with high Percent Impedance
A reluctance motor is made by arranging a material with high permeability, which is free to...
A reluctance motor is made by arranging a material with high permeability, which is free to rotate, in the gap of a magnetic circuit excited by a current i (t). The inductance of the magnetic circuit varies according to the angle θ of the rotor. The maximum inductance, L_0 + L_1, occurs when θ is null or 180 °, and the minimum inductance, L_0-L_1, for θ = ± 90 (a) What is the magnetic torque of the rotor, T_mag, as...
Q2) Design a magnetic circuit with the dimensions of the magnetic core such that there is...
Q2) Design a magnetic circuit with the dimensions of the magnetic core such that there is a single magnetomotive force NI (amperexturns) and 3 reluctances where the reluctances are all equal ( R R R ) and R, is in series with parallel connection of R2 and Rs. The design should include the magnetic circuit diagram and the magnetic core material with all the dimensions of the core. You should also calculate the reluctance values using the dimensions of the...
2.120 pts] A schematic diagram of transformer is shown below. The closed path, l in the magnetic circuit in the Figure is traced by magnetic flux Ф. N,, N2, and 11, 12 are the numbers of turns and th...
2.120 pts] A schematic diagram of transformer is shown below. The closed path, l in the magnetic circuit in the Figure is traced by magnetic flux Ф. N,, N2, and 11, 12 are the numbers of turns and the currents in the primary and secondary circuits, respectively. The permeability, and cross-section of ferromagnetic core is, u and A İl(r) (a) [6 pts] Draw an equivalent magnetic circuit with two magnetomotive force, Vmmfi, and Vmmf2, magnetic closed flux, 4, and magnetic...
Question 4 Which is not true of a magnetic field? O Magnetic field lines originate in...
Question 4 Which is not true of a magnetic field? O Magnetic field lines originate in north pole particles and end in south pole particles O Magnetic field lines form loops with no starting or ending point O Magnetic field lines will cause a force on a compass needle placed in the field The magnetic field is strongest where field lines are drawn closest together Question 5 20 What property can scientists measure if they can analyze the different frequencies...
3) For the following r-network at 1 GHz, calculate a) The admittance matrix b) The impedance...
3) For the following r-network at 1 GHz, calculate a) The admittance matrix b) The impedance matrix c) The ABCD matrix (30 points) 1/π nH 11, 2 O-
ANSWER 6-9 please 6. What is the relationship between o and B? 7. How can magnetic...
ANSWER 6-9 please
6. What is the relationship between o and B? 7. How can magnetic reluctance R be calculated? What field quantity is calculated by dividing the mmf F by the reluctance R? 8. In magnetic circuits with an air gap, what usually dominates the total reluctance in the flux path: the air gap or the rest of the magnetic structure? 9. What is the meaning of the flux linkage of a coil?
Magnetic Circuits y Part A - Calculate reluctances Learning Goal: To understand how magnetic structures can...
Magnetic Circuits y Part A - Calculate reluctances Learning Goal: To understand how magnetic structures can be analyzed by drawing an equivalent circuit, and to use the equivalent circuit to calculate magnetic fluxes and coll currents. When analyzing magnetic structures, the geometry is often complex enough that using the fundamental rules can be very difficult without numerical methods. However, there are approximate methods that are often sufficient for engineering calculations. When the magnetic field is mostly contained within cores of...
If a material is easily magnetized, it would be said to have : O a. High Reluctance. b. High Impedance. O c. High Admittance O d. High Permeability
Electrical circuits
Determine:
A) Magnetomotive force
B) Reluctance
C) Current
D) What is the air gap flux density, with 3.8% E.M (Marginal
Effect electric machines). ?
Data:
- Magnetic core Permeability μr=4800
- Flow 0.045 WB
E) Draw the equivalent magnetic circuit
Solve step by step
10 cm. 20 cm Cn 15 cm 500 Turns of Wire 15 Cm 400 Turns of Wire 15 cm 0.05 cm Thickness: 3.5cm
Magnetic lines of force which oppose each other can be created by: a. Parallel conductors carrying current in the same Direction O b. Conductors carrying no current OC. Parallel conductors carrying current in Opposite Direction d. Parallel conductors with high Percent Impedance
Q2) Design a magnetic circuit with the dimensions of the magnetic core such that there is a single magnetomotive force NI (amperexturns) and 3 reluctances where the reluctances are all equal ( R R R ) and R, is in series with parallel connection of R2 and Rs. The design should include the magnetic circuit diagram and the magnetic core material with all the dimensions of the core. You should also calculate the reluctance values using the dimensions of the...
2.120 pts] A schematic diagram of transformer is shown below. The closed path, l in the magnetic circuit in the Figure is traced by magnetic flux Ф. N,, N2, and 11, 12 are the numbers of turns and the currents in the primary and secondary circuits, respectively. The permeability, and cross-section of ferromagnetic core is, u and A İl(r) (a) [6 pts] Draw an equivalent magnetic circuit with two magnetomotive force, Vmmfi, and Vmmf2, magnetic closed flux, 4, and magnetic...
Question 4 Which is not true of a magnetic field? O Magnetic field lines originate in north pole particles and end in south pole particles O Magnetic field lines form loops with no starting or ending point O Magnetic field lines will cause a force on a compass needle placed in the field The magnetic field is strongest where field lines are drawn closest together Question 5 20 What property can scientists measure if they can analyze the different frequencies...
3) For the following r-network at 1 GHz, calculate a) The admittance matrix b) The impedance matrix c) The ABCD matrix (30 points) 1/π nH 11, 2 O-
ANSWER 6-9 please
6. What is the relationship between o and B? 7. How can magnetic reluctance R be calculated? What field quantity is calculated by dividing the mmf F by the reluctance R? 8. In magnetic circuits with an air gap, what usually dominates the total reluctance in the flux path: the air gap or the rest of the magnetic structure? 9. What is the meaning of the flux linkage of a coil?
Magnetic Circuits y Part A - Calculate reluctances Learning Goal: To understand how magnetic structures can be analyzed by drawing an equivalent circuit, and to use the equivalent circuit to calculate magnetic fluxes and coll currents. When analyzing magnetic structures, the geometry is often complex enough that using the fundamental rules can be very difficult without numerical methods. However, there are approximate methods that are often sufficient for engineering calculations. When the magnetic field is mostly contained within cores of...
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