An air core toroidal coil has 120 turns, the length is 12 cm and 12 sq. cm in area What is the current required to set up a flux of 1.2x10° weber. What is the current?

Q: 6. The field winding of a DC generator is wound with 900 turns and has a resistance of 50 ohms. If…

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Q: A coil of inductance 8mH, produces 80µWb of magnetic flux. Of this total flux, 60µWb are linked to a…

A: Mutual inductance M =K Inductance of coil 1 (L1) ×self inductance of coil (L2)Where K is the…

Q: 4.36 As temperature falls below the transition temperature, the value of critical magnetic field of…

A: The critical magnetic field of a superconductor is the maximum magnetic field strength below which…

Q: Magnetic field force lines created by the primary coil in transformers pass through the secondary…

A: A primary voltage produces an alternating current through the primary coil. Due to this primary coil…

Q: In a coil with radius of 6 cm and 400 turns, there is a magnetic field leaving in a direction…

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Q: In the secondary. The cross-sectional area of the core is 80 sq. cm. If the primary winding is…

A: In single phase transformer, consider the primary turn is N1=500 and the secondary turn is N2=1200.…

Q: We consider a particle of charge q moving in a magnetic field B with a speed v. What is the force…

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Q: 4. A magnetic circuit has a length of 100 cm and cross-sectional area of 5 square cm. The total flux…

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Q: A magnetic flux of 1000 lines cuts across a coil of 800 turns in 2 us. What is the voltage induced…

A: Given: Magnetic flux of 1000 lines. Turns in coil, N=800 Time, dt=2 μs

Q: The flux linking to 200 turns coil changes from 2 mWb to 5 mWb in 1ms to 3 ms. Determine the induced…

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Q: A coil of 100 turns has an inductance of 500 mH. If we pass a current of how many amperes through…

A: We have been given an coil with, Coil turns (N) = 100 turns   Inductance of coil (L) = 500 mH = 500…

Q: 3- A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the…

A: Given lg =4 cmN=100μr =2000μo =4π×10-7

Q: An infinitely long straight wire carrying current = 2A as shown in figure. What will be the total…

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Q: A ferromagnetic core with a relative permeability of 2000 is shown in Figure. The dimensions are as…

A: We have given the following problem

Q: 3. A group of electromagnets that create flux in a d-c generator (the field circuit) has an…

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Q: Determine the emf inducted in a coil that rotates its 1250 r/min. The coil has 60 windings and a…

A: Given data : Speed of coil N=1250rpm  Magnetic flux ϕ=36mWb Coil length L=0.7m Coil width w=0.6m…

Q: A coil of 15000 turns is wound on a core. A current of 2.7 A flowing through the coil creates a core…

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Q: A 100-turn coil is wound on a toroidal core and has an inductance of 100 mH. Suppose that a 200-turn…

A: Given data: N1 is: 100 L1 is: 100 mH N2 is: 200 The expression for the inductance is given as, L =…

Q: The magnetic circuit shown in the figure has two windings and two air gaps. The core can be assumed…

A: The magnetic circuit is shown below:  Coil 1 The total flux linkage due to coil 1 is the flux…

Q: 3-A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the…

A: To find the current that is required to produce Total flux of 0.00052 WB.

Q: A two-legged core is shown in figure below. The winding on the left leg of the core (N) has 800…

A: We have given the following problem A two legged core is shown below the winding on the left leg of…

Q: An ignition coil having 10000 turns has an e.m.f. of 8kV _induced in it. What rate of change of flux…

A: The solution can be achieved as follows.

Q: Q3:B: Name general types of DC generators and make a sketch of their connections

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Q: 5-A direct current of one ampere is passed through a coil of 5000 turns and produces a flux of…

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Q: Question: 01 A three-legged circular core is shown in figure below. The winding on the left leg of…

A: To determine the total area of the three-legged circular core shown in figure. Now, the Area of leg…

Q: A coil that consists of 450 windings is wound around a bakelite ring.  The mean diameter of the ring…

A: When a coil of turn N is wounded on a ring with peripehral length L and carry a current I then it…

Q: The toroid of Figure Po = 10 cm and a = 1 cm, what current is required to establish a magnetic flux…

A: Two conductor are inductively coupled when change in current in one conductor induce voltage in…

Q: What will be the value of magnetic field at the centre of a 8 m long coil, when the coil has 260…

A: Given: Length of coil, l = 8 m Number of turns, N = 260 turns Current, I = 4 A

Q: For the ferromagnetic core below, the current i = 3.25 A. The relative permeability of the core is…

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Q: a rectangular ferromagnetic core 40 x 60 mm has a flux φ = 1.44 mwb. an air gap in the core is of…

A: This question belongs to electrical machine. It is based on the concept of relation between flux ,…

Q: A. The field winding of a DC generator is wound with 900 turns and has a resistance of 50 ohms. If…

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Q: The permeability of an annealed iron core is 5600 × 10-6 Tm/At when the current is 80 mA. The coil…

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Q: A length of stiff copper wire is made into a rectangle measuring 24 cm by 10 cm. It is rotated at a…

A: Given data, l=24 cmb=10 cmN=600 rpmB=0.5 Tθ=90°

Q: 3- A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the…

A: Reluctance Reluctance is a property of magnetic material which opposes the flux in the magnetic…

Q: Flux ines are..to the surface of the poles If the poles are concentric to the rotation of a coil,…

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

Q: A coil with 900 turns is wound over a magnetic core 5 cm in length, a cross-section of 2 sq. cm and…

A: In this question we need to find a magnetic flux generated by coil.

Q: Problem 4 The magnetic circuit shown in the figure has two windings and two air gaps. The core can…

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Q: Amagnetic circuit has an average length of 1.4 m and a cross-sectional area of 0.25 m2. Excitation…

A: The expression for the flux density is given as:

Q: A and B are two coils in close proximity. A has 1200 turns and B has 1000 turns. When a current of…

A: Given that Number of turns (NA) = 1200 Number of turns (NB) = 1000 Current I = 0.8A Flux
φA = 100…

Q: If a current pass through an inductive, .magnetic energy will store in the coil True False

A: Inductors are used to store energy in form of magnetic field. When current is passed through the…

Q: If a current pass through an inductive, magnetic energy will store .in the coil True False

A: There are two types of passive elements in ehich energy store, namely  Capacitor  Inductor

Q: 4. An ideal core (assume relative permability is infinity) with a crossectional area of 12 cm² is…

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Q: A coil has a field intensity at 300 At. Its length is doubled from 20 to 40 cm for the same…

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Q: A coil wound 3000 turns in the form of an air-cored torus with a square cross section. The inner…

A: Given,The number of turns is,N=3000The inner diameter of the torus is,Din = 60mmDin = 0.06mThe outer…

Q: 4-A magnetic core with an air gap is shown in below Figure. The depth of the core is 3 cm, the…

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Q: Given a common magnetic core whose length is 100 cm, its cross-sectional area is 25 cm square. The…

A: The solution is given below

Q: Q8) If a time-varying magnetic flux is applied perpendicularly on a filament wire loop that includes…

A: Maxwell equation for time varying field-  For time varying current, electromagnetic wave are…

Q: 7. A coil having a resistance of 20 ohms and an inductance of 0.75 henry is connected in series with…

A: In this question,  We need to determine the rate of current change and power delivered by the…

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.