An iron core has 250 times more flux density than air for the same field intensity. What is the value of its relative permeability?

Q: Electric flux density in electric field is referred to as Ratio of flux lines crossing a surface and…

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Q: Quantity that is not affected by magnetic field is Current flowing in conductor ㅇ Moving charge…

A: The magnetic field present do affect the current flowing in conductor.

Q: In the magnetic circuit shown below, what is the flux density produced if the relative permeability…

A: Given- A magnetic circuit- Number of turns N=100, Current I = 5 A, Relative permeability μr=1000,…

Q: What is the flux density of a magnetic field whose flux is 1000 µWb and cross-sectional area is 0.5…

A: Given, Magnetic field whose Flux, φ=1000 μWb. Cross sectional area, A=0.5 m2. The flux density of a…

Q: The "Ohm's law" for the magnetic circuit states that the net magnetomotive force (mmf) equals the…

A: According to the equation of the Ohm’s law for the magnetic circuit:

Q: Reason for the change in the flux.

A: Since, the flux related to the system is directly proportional to the M.M.F. and inversely…

Q: What is the flux density of a magnetic field whose flux is 1000 μWb and cross-sectional area is 0.5…

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Q: 100 windings are wound on an iron core and 1A direct current flows through it. The mean path of the…

A: It is given that: number of turnsN=100 currentI=1A Mean path lengthlcore=0.3m Air gap…

Q: 1-22. For the figure below, determine the magnetic field intensity in A/m and its direction (into or…

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Q: Show that the total magnetic force on any closed current loop in a uniformmagnetic flux density is…

A: let us assume circular current loop of radius of 'R' carrying current 'I' and placed in the XY plane…

Q: he flux density of a magnetic field whose flux is 300 cectional area is 0.25 m ?

A: In this question , we have given flux and cross sectional area..We have to find out flux density ..

Q: 10 A N1 500 turns N2 50 0.5 500 turns For above given magnetic circuit find flux (), magnetic flux…

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Q: 3) Derive the total reluctance of the magnetic circuit shown in the Figure.

A: The given question involves finding the total reluctance of a magnetic circuit consisting of…

Q: The eddy current loss in a particular magnetic circuit is 10W/m3. If the frequency of operation is…

A: The eddy current loss in a particular magnetic circuit is 10W/m3. If the frequency of operation is…

Q: Show that a 1% change in flux is approximately equivalent to a change of 0.01 in magnitude.

A: The solution is given below

Q: What is the magnetic field intensity in a material whose relative permeability is 1 when the flux…

A: Given  Flux density = 0.005 T  Relative permeability = 1  To find magnetic field intensity

Q: Explain Faraday's law in layman's terms. Briefly discuss & provide an illustrative example.

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Q: Consider the magnetic circuit in Figure. Assuming that the core u= 1000µo has a uniform cross…

A: The solution is given below

Q: flux of 0.5 Weber flows through a core with a total reluctance of 60,000 ampere-turns/Weber. How…

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Q: A coil of wire with an average length of 20 cm moves through a magnetic field. The flux is cut with…

A: The solution is given below

Q: What would be the inducesd voltage for a conductor moving at a speed of 25 km/h and having a length…

A: Given data, Speed of conductor, v=25 km/h Length, L=1 m Magnetic flux density, B=0.6 T

Q: 4. Induced current occurs when the magnetic flux through a conducting loop changes. This can happen…

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Q: In figure, a magnetic flux of F is generated with a constant current of i The core material used has…

A: Given: For a magnetic circuit, Number of turns of the coil N=400, Current in the coil i=20 A,…

Q: 2- Determine the current I required to establish a flux of 1.5×10-4 Wb in the section of the core…

A: The circuit can be determined by its magnetic circuit equivalent as

Q: What will be the MMF required to produce a flux density of 0.88 T in an air gap of 8 mm?

A: Given :- flux density = .88T = B             Air gap = l= 8mm= 8 ×10^-3 m         We have to…

Q: What is the primary characteristic of an eddy current in a conductor exposed to a changing magnetic…

A: Eddy currents are circulating currents induced in the conductor when it is exposed to a changing…

Q: 3. How does the concept of hysteresis affect the performance of magnetic materials in electrical…

A: Step 1:Hysteresis in magnetic materials refers to the lag between changes in the magnetizing force…

Q: A changing magnetic flux induces voltage.   True  False

A: The solution is given below

Q: 7 a. Draw and explain magnetic Hysteresis curve. b. What is dot convention for magnetic circuits?…

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: Required mathematical expression of the relationship between magnetic flux density and magnetic…

A: To explain the relationship between magnetic flux density and magnetic field strength

Q: TRUE or FALSE - The magnetic flux density is directed along the direction of the magnetic field…

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Q: Given a Magnetic flux density R- 5-2 4: what is the Magnetic Flux exiting the closed surface of the…

A: Given B=5z2 (phi_cap)  -2<=rho=<2 And  1<=z<=4

Q: Problem 24. The eddy current loss in a magnetic material subjected to maximum flux density of 1.2…

A: Given- Eddy current loss, Pe1=1600 watts , Maximum flux density, Bmax1=1.2T , frequency, f1 = 50 Hz…

Q: Question 3. The mean length of the magnetic core is 20 cm, the cross section is 5 cm2, and the…

A: Introduction In electrical engineering, the reluctance of a magnetic core refers to its opposition…

Q: The magnetic structure in the figure below is made of silicon steel. Determine the values of IB…

A: Note: Relative permeability (μr) for silicon steel is not given . We assume μr = 2000     Given NB=…

Q: Calculate the current required to produce a flux of 1.75 mwb in the ring, if the relative…

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Q: The flux density at a distance of 0.1 m from a long straight wire, carrying a current of 200 A is?

A: Given: Distance from a long straight wire, d = 0.1 m. The wire carrying a current, I=200 A.

Q: for given flux density find value of K.

A: Given flux density is - B→=4xax→+2kyay→+8az→  Wb/m2

Q: What would be the inducesd voltage for a conductor moving at a speed of 25 km/h and having a length…

A:

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.