Complete the sentence —

An a.c. generator changes the ___ energy to ___ energy.

What energy conversion does take place in a generator when it is in use?

How are the e.m.f. in the primary and secondary coils of a transformer related with the number of turns in these coils?

Complete the following sentences —

(i) In a step up transformer, the number of turns in the primary are ….. than the number of turns in the secondary.

(ii) The transformer is used in ………….. current circuits.

(iii) In a transformer, the frequency of a.c. voltage ……… (increase / decreases / remains same)