Question:

Which of the following windmill has good power coefficient, high starting torque and low cost?

Show Hint

Multibladed windmills are preferred for water pumping because they produce high starting torque.
  • Horizontal axis single blade type
  • Horizontal axis multibladed type
  • Sail type
  • Darrieus type
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The Correct Option is B

Solution and Explanation


Step 1:
Windmills are classified according to axis of rotation and blade arrangement.

Step 2:
For agricultural applications like water pumping, high starting torque is very important.

Step 3:
A horizontal axis multibladed windmill has many blades, so it develops high starting torque.

Step 4:
It also has a good power coefficient and is economical for rural and agricultural uses.

Step 5:
Therefore, the correct answer is: \[ \boxed{\text{Horizontal axis multibladed type}} \]
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