Question

If a fan has 3 blades, its degree of rotation is .

• A. ${90}^{\circ }$
• B. ${120}^{\circ }$
• C. ${150}^{\circ }$

Answer 1

The correct option is B ${120}^{\circ }$

Since, the fan has three blades, the central angle is divided into 3 equal parts. This gives $\frac{{360}^{\circ }}{3}={120}^{\circ }$.

So, its degree of rotation is ${120}^{\circ }$.