Explain with the help of a labelled diagram the underlying principal and working of a step-up transformer, why cannot such a device be used to step-up `d.c.` voltage ?

Why cannot a transformer be used to step up d.c. voltage ?

Explain with the help of a labelled diagram the working of a transformer.

What is a step up transformer?

(i) with the help of a labelled diagram, describe briefly the underlying principle and working of a stepup transformer. (ii) Write any two sources of energy loss in a transformer. (iii) A step-up transformed converts a low input voltage into a high output voltage. Does it violate law of conservation of energy ? Explain.

A step up transformer is used to

A step up transformer is used to