What is the main reason why the blade pitch angle eg the twi

What is the main reason why the blade pitch angle (e.g.. the twist angle at squareroot of the blade) is close to 0?. A blade pitch angle of close to zero helps to generate maximum torque at the squareroot. B. A blade pitch angle of close to zero helps to postpone stall. C. A blade pitch angle of close to zero is strictly for structural reasons.

Solution

A.zero pitch angle gives maximum torque at the root