Transformer - Mechanical Engineering Mechanical Engineering Notes | EduRev

Mechanical Engineering : Transformer - Mechanical Engineering Mechanical Engineering Notes | EduRev

The document Transformer - Mechanical Engineering Mechanical Engineering Notes | EduRev is a part of Mechanical Engineering category.
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Needed the full explanation of transformers with vedios?
Ref: https://edurev.in/question/687472/Needed-the-full-explanation-of-transformers-with-v

What is a Transformer

A Transformer is a static electrical machine which transfers AC electrical power from one circuit to the other circuit at the constant frequency, but the voltage level can be altered that means voltage can be increased or decreased according to the requirement.
It works on the principle of Faraday’s Law of Electromagnetic Inductionwhich states that “ the magnitude of voltage is directly proportional to the rate of change of flux.”

Transformer - Mechanical Engineering Mechanical Engineering Notes | EduRev








Necessity of a Transformer

Usually, electrical power is generated at 11Kv. For economical reasons AC power is transmitted at very high voltages say 220 kV or 440 kV over long distances. Therefore a step-up transformer is applied at the generating stations. Now for safety reasons the voltage is stepped down to different levels by step down transformer at various substations to feed the power to the different locations and thus the utilisation of power is done at 400/230 V.

Transformer - Mechanical Engineering Mechanical Engineering Notes | EduRev






If (V2 > V1) the voltage is raised on the output side and is known as Step-up transformer

If (V2 < V1) the voltage level is lowered on the output side and is known as Step down transformer

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