Question:
Transformer is based upon the principle of:
Transformer is based upon the principle of:
Updated On: Jul 28, 2022
- self- induction
- mutual induction
- eddy current
- none of these
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The Correct Option is B
Solution and Explanation
Transformer consists of two coils one primary and the other secondary. Transformer is a device based on the principle of mutual induction, which is used for converting large alternating current at low voltage into small current at high voltage and vice-versa.
The transformer which converts low voltages into higher ones are called step-up transformers, while those which convert high voltages into lower ones are called step-down transformers. $2$ Transformers are used only in $AC$ not $DC$.
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Concepts Used:
Transformers
Transformer is a device used in power transmission to change the AC voltage without changing the frequency between the circuits. Electrical transformer consists of two coils named as the primary coil and secondary coil which is wounded on a soft iron core. The soft iron core is laminated to minimize eddy currents. Both the coil in the transformer has high mutual inductance.Transformers work on the principle of Faraday’s law of electromagnetic induction and mutual inductions.
A mutual electro-motive force is induced in the transformer from the alternating flux that is set up in the laminated core, due to the coil that is connected to a source of alternating voltage.
Other types of transformers:
- Autotransformers: This kind of transformers contain only one coil wound over a laminated core. In Autotransformers, primary and secondary windings share the same coil.
- Power transformers: They are majorly used in power generation stations as they are suitable for major higher voltages.