Question

why does fan have only three blades​

Answer 1

Answer:

Explanation:

Electric fans can have 3-4-5 – any number of blades but why do fans in India only stick with 3 blades? The primary purpose of an electric fan is to create air flow.

Answer 2

Fans best work when they are proportional
The angle between the 2 arms will always be equal and three is the least number which is sufficient hence making it more cheap durable and reliable