Physics Surface Integral Soft iron use. Question Soft iron used to make the core of transformer, because of its : A low coercivity and high retentivity B high coercivity and low retentivity C high coercivity and high retentivity D low coercivity and low retentivity Solution The correct option is D low coercivity and low retentivity

Solution Verified by Toppr Correct option is A) Hysteresis loss in the core of transformer directly proportional to the hysteresis loop area of the core material. Since soft iron has narrow hysteresis loop area, that is why soft iron core is used in the transformer. Solve any question of Magnetism and Matter with:- Patterns of problems >

Correct option is D) The core of a transformer is made of soft iron because it has high permeability so it provides complete linkage of magnetic flux of the primary coil to the secondary coil. Therefore ithas high coercivity and low retentivity. Solve any question of Alternating Current with:-.

Answer: 3. Explanation: The soft iron core increases the strength of the magnetic field inside a transformer. The main purpose of using an iron core in a transformer because iron is a magnetic material and it is easily available everywhere.

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In transformers, soft iron cores are utilised because they have excellent magnetic permeability, which focuses magnetic lines of force and reduces energy loss. Is core magnetic? In a sense, yes. The Earth is composed of layers having different chemical compositions and different physical properties.

We have said previously that a transformer basically consists of two coils wound around a common soft iron core. When an alternating voltage ( V P ) is applied to the primary coil, current flows through the coil which in turn sets up a magnetic field around itself.

The soft iron core increases the strength of the magnetic field inside a transformer. The main purpose of using an iron core in a transformer because iron is a magnetic material and it is easily available everywhere. The core is laminated to reduce the Eddy current and hence Eddy current losses

What is Soft Iron? Soft Iron is also a ferromagnetic substance, which means that it can act as a magnetic substance in the absence of an electric field. Soft iron is the type of ferromagnetic material. It possesses magnetization but can be re-magnetized with the use of small changes in electric force.

Solid Iron Core: These cores provide magnetic flux, and helps retain high magnetic fields without iron saturation. The cores are not recommended for transformers operating at AC applications because large eddy currents are produced by the magnetic field. These eddy currents produce heat at high frequencies.

Updated December 08, 2018 By Lee Johnson Iron is widely regarded as the best core for an electromagnet, but why? It isn’t the only magnetic material, and there are plenty of alloys such as steel that you might expect to be used more in the modern age.

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