Question

Statement 1: Permanent magnet is used in commerical electric motors.
Statement 2: Number of turns of conducting wire is kept low.
Select the correct option from below.

• A. Only statement 1 is true
• B. Only statement 2 is true
• C. Both the statements are wrong.
• D. Both the statements are true.

Answer 1

The correct option is A Only statement 1 is true

For a commerical electric motor following things are kept in mind:

1. Electromagnet is replaced by permanent magnet.
2. Large number of turns of the conducting wire in the current carrying coil are made.
3. Soft iron core is used on which the coil is wounded.