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Why is the iron core of a transformer made laminated instead of being in one solid piece?
  • a)
    To reduce the magnetic field link losses
  • b)
    To reduce the loss due to heating of coils
  • c)
    To reduce the hysterisis losses
  • d)
    To reduce the losses due to eddy currents.
Correct answer is option 'D'. Can you explain this answer?
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Why is the iron core of a transformer made laminated instead of being ...
The laminated iron core prevents the formation of eddy currents and thus reduces the loss of energy.
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Why is the iron core of a transformer made laminated instead of being ...
Eddy currents are the loops of electrical current induced within conductors by a changing magnetic field in the conductor, due to Faraday's law of induction.
Making the core out of thin laminations parallel to the magnetic field with insulation between them reduces the eddy currents and thus also reduces the energy loss due to eddy currents.
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Why is the iron core of a transformer made laminated instead of being ...
The iron core of a transformer is made laminated instead of being in one solid piece to reduce the losses due to eddy currents. This is because when an alternating current passes through a solid iron core, it creates eddy currents that circulate within the core, which in turn leads to energy loss in the form of heat. This phenomenon is known as eddy current loss.

To overcome this problem, the iron core is made up of thin laminated sheets, which are insulated from each other. This reduces the eddy current losses by creating a high resistance barrier between the laminations.

The following are the reasons why the iron core of a transformer is made laminated:

1. Reducing Eddy Current Losses: As stated earlier, the primary reason for making the iron core laminated is to reduce the losses due to eddy currents. By creating a high resistance barrier between the laminations, the eddy current losses are minimized.

2. Minimizing Hysteresis Losses: Hysteresis losses are caused by the repeated magnetization and demagnetization of the iron core due to the alternating current passing through it. By using laminated sheets, the hysteresis losses are also minimized.

3. Reducing Magnetic Field Link Losses: Magnetic field link losses occur due to the leakage of the magnetic flux from the iron core. By using laminated sheets, the magnetic field link losses are also reduced.

4. Improving Efficiency: By reducing the eddy current, hysteresis, and magnetic field link losses, the overall efficiency of the transformer is improved.

In conclusion, the use of laminated sheets in the iron core of a transformer is crucial to minimize the losses due to eddy currents and improve the overall efficiency of the transformer.
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Read the following text and answer the following questions on the basis of the same: TOROIDA toroid is a coil of insulated or enamelled wire wound on a donut-shaped form made of powdered iron. A toroid is used as an inductor in electronic circuits, especially at low frequencies where comparatively large inductances are necessary. A toroid has more inductance , for a given number of turns, than a solenoid with a core of the same material and similar size. This makes it possible to construct high-inductance coils of reasonable physical size and mass. Toroidal coils of a given inductance can carry more current than solenoidal coils of similar size, because larger-diameter wires can be used, and the total amount of wire is less, reducing the resistance . In a toroid, all the magnetic flux is contained in the core material. This is because the core has no ends from which flux might leak off. The confinement of the flux prevents external magnetic fields from affecting the behaviour of the toroid, and also prevents the magnetic field in the toroid from affecting other components in a circuit. Standard toroidal transformers typically offer a 95% efficiency, while standard laminated transformers typically offer less than a 90% rating. One of the most important differences between a toroidal transformer and a traditional laminated transformer is the absence of gaps. The leakage flux through the gaps contributes to the stray losses in the form of eddy currents (which is also expelled in the form of heat). A toroidal core doesn’t have an air gap. The core is tightly wound . The result is a stable, predictable toroidal core, free from discontinuities and holes. Audible vibration or hum in transformers is caused by vibration of the windings and core layers from the forces between the coil turns and core laminations. The toroidal transformer’s construction helps quiet this noise. In audio, or signal transmitting applications, unwarranted noise will affect sound quality, so a transformer with low audible vibration is ideal. For this reason, many sound system engineers prefer to use a toroidal transformer instead of a traditional laminated transformer.Why inductance of solenoid is more than the inductance of a solenoid having same number of turns, core of same material and similar size?

Why is the iron core of a transformer made laminated instead of being in one solid piece?a)To reduce the magnetic field link lossesb)To reduce the loss due to heating of coilsc)To reduce the hysterisis lossesd)To reduce the losses due to eddy currents.Correct answer is option 'D'. Can you explain this answer?
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Why is the iron core of a transformer made laminated instead of being in one solid piece?a)To reduce the magnetic field link lossesb)To reduce the loss due to heating of coilsc)To reduce the hysterisis lossesd)To reduce the losses due to eddy currents.Correct answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Why is the iron core of a transformer made laminated instead of being in one solid piece?a)To reduce the magnetic field link lossesb)To reduce the loss due to heating of coilsc)To reduce the hysterisis lossesd)To reduce the losses due to eddy currents.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why is the iron core of a transformer made laminated instead of being in one solid piece?a)To reduce the magnetic field link lossesb)To reduce the loss due to heating of coilsc)To reduce the hysterisis lossesd)To reduce the losses due to eddy currents.Correct answer is option 'D'. Can you explain this answer?.
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