Question

Which of the following ways can be used to increase the power output of a DC motor?

• A. Increasing the current in the coil.
• B. Increasing the number of turns on the coil.
• C. Increasing the strength of the magnetic field.
• D. Decreasing the area of the coil.

Answer 1

Answer: (A), (B), (C)

The correct options are
A Increasing the current in the coil.
B Increasing the number of turns on the coil.
C Increasing the strength of the magnetic field.

A DC motor works on the principle of force exerted on a current carrying conductor in a magnetic field. Increasing the current in the coil, increasing the turns on the coil and increasing the magnetic field are valid ways of increasing the power of a motor. Increasing the area of the coil is also a way of achieving higher power.