A) laminating the core
B) laminating the core of steel
C) increasing the number of turns of primal coil
D) lubricating the core
Correct Answer: A
Solution :
When magnetic flux linked with a coil changes induced emf is produced in it and the induced current flows through the wire forming the coil. In 1895, Focault experimentally found that these induced currents are set up in the conductor in the form of closed loops. These currents look like eddies or whirl pools and likewise are known as eddy currents. They are also known as Focaults currents. These current oppose the cause of their origin, therefore due to eddy currents, a great amount of energy is wasted in form of heat energy. To minimise these current, the core of transformer should be laminated.
You need to login to perform this action.
You will be redirected in
3 sec
