In transformer core is made or soft iron to reduce_______.

The correct answer is Hysteresis losses 

Key Points

• Transformer:
  • A transformer is a device used in the power transmission of electric energy.
  • The transmission current is AC.
  • It is commonly used to increase or decrease the supply voltage without a change in the frequency of AC between circuits.
  • The transformer works on basic principles of electromagnetic induction and mutual induction.
  • The core of a transformer is made of soft iron.
  • Transformers are used in various fields like power generation grid, distribution sector, transmission, and electric energy consumption.
  • There are various types of transformers which are classified based on the following factors;
    • Working voltage range.
    • The medium used in the core.
    • Winding arrangement.
    • Installation location.
       
• Working Principle of a Transformer:
  • The transformer works on the principle of Faraday’s law of electromagnetic induction and mutual induction.
  • There are usually two coils primary coil and secondary coil on the transformer core.
  • The core laminations are joined in the form of strips.
  • The two coils have high mutual inductance.
  • When an alternating current passes through the primary coil it creates a varying magnetic flux.
  • As per faraday’s law of electromagnetic induction, this change in magnetic flux induces an emf (electromotive force) in the secondary coil which is linked to the core having a primary coil.