Question

Hey !!

What is a Transformer ? Proper explanation needed. With principle , construction and with theory too.

CBSE BOARD EXAMINATION.

Answer 1

✔✔heya here is ur answer!!!

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A transformer consists of primary and secondary coils insulated from each other wound on a soft iron core....

⏩ Transformer is a static device which convert electrical power from one circuit to another without changing its frequency....


PRINCIPLE OF WORKING::

⏩ It works on a principle of mutual induction of two coils or Faraday Laws of Electromagnetic induction.

⏩It depends on two principles :
first , that an electric current produce a magnetic field..
second, that a changing magnetic field within a coil of wire induces a voltage across the end of the coil.

CONSTRUCTION: :

⏩For construction of transformer , you must need two coils having mutual inductance and a laminated steel core. The two coils are insulated each other and from the steel core. It will also need some suitable container for assembled core and a windings...


⏩In all transformers that are commercially, the core is made out of transformer sheet steel laminations assembled to provide a continuous magnetic with minimum of air- gap included.

THANK YOU ✌✌

HOPE IT HELPS YOU ☺☺

HAPPY RAKSHA BANDHAN......

Answer 2

$\bold{Hello}$

→ Transformer :- A transformer is a device whose function is to increase or decrease the voltage ( V ) . it also decrease or increase the current ( I )

→ If a transformer increases the voltage then it is called ' Step Up transformer ' , and if it decreases the voltage , then it is called ' Step Down Transformer .

→ Principle :- Transformer works on the principle of EMI or Mutual induction.

→ Transformer works on only AC .

→ There is a primary coil and secondary coil. also the number of turns in coil is denoted by Np = no. of turns in primary coil and Ns = no. of turns in secondary coil .


→ The coil which is connected to the source is called primary coil and the other which is connected to the load is called secondary coil .




→ The AC passes through primary coil create flux and this flux induces an EMF in secondary coil.



→ Formulae :-

$\huge{\frac{N_{s}}{N_{p}} = \frac{I_{p}}{I_{s}}}$











Hope It Helps You. ^_^