question_answer

Which of the following are the possible ways to increase the induced e.m.f. produced by a simple A.C. generator?

(i) Increasing the rotating speed of the coils

(ii) Placing a soft iron core in the coil

(iii) Replacing the permanent magnets with another pair of magnets having stronger magnetic field strength

A) Only (i) and (ii)

B) Only (ii) and (iii)              

C) Only (i) and (iii)               

D) (i), (ii) and (iii)