Question

The power of a d.c. motor can be increased:

विकल्प

• by increasing number of turns in its coil

• by laminating its soft iron core

• by increasing the strength of current flowing through it.

• all of these

Answer 1

All of these

Explanation:

The power of a d.c. motor increases by increasing the number of turns in the coil, by laminating the soft iron core, and by increasing the current flowing through it. Therefore, all the given methods are correct.