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Working Principle of DC Motor with Handwritten Notes in PDF

A DC motor is an electrical machine that converts electrical energy into mechanical energy.

What is a DC Motor?

A DC motor is defined as a class of electrical motors that convert direct current electrical energy into mechanical energy.

Working principle of DC motor

The basic working principle of the DC motor is that When a current-carrying conductor is placed in a magnetic field, it experiences a mechanical force.

  • The flux is created by a field winding.
  • Armature winding plays the role of current carrying conductor.

The magnitude of Force:

F = BIL Newtons

B = magnetic flux density,
I = current and
L = length of the conductor within the magnetic field.
The direction of rotation is determined by Fleming’s Left Hand Rule.

Working Principle Of DC Motor


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