Question

The shape of a rotor is:

• A. Square
• B. Cubic
• C. Rectangular
• D. Cylindrical

Answer 1

The Correct Option is D

The rotor is the rotating part of an electric motor or generator. It is typically designed in a cylindrical shape to allow smooth rotation within the stator and to maintain a uniform air gap. This shape helps in minimizing mechanical stresses and allows efficient magnetic flux distribution.
Square, Cubic, Rectangular shapes are not practical for rotors as they would cause mechanical imbalance and higher losses due to uneven air gaps.
Cylindrical rotor ensures better mechanical strength and reduces vibration, improving the efficiency and lifespan of the machine.