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Wind energy

'The tower an...

Question

'The tower and blades of a windmill need a low level of maintenance once installed.' The statement is

A

True

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B

False

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C

Ambiguous

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D

Data Insufficient

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Solution

The correct option is B False
The tower and blades of a windmill are exposed to the vagaries of nature like rain, Sun, storm and cyclone, they need a high level of maintenance.

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Q. Question 14
Choose the incorrect statement regarding wind power.

(a) It is expected to harness wind power to minimum in open space.
(b) The potential energy content of wind blowing at high altitudes is the source of wind power.
(c) Wind hitting at the blades of a windmill causes them to rotate The rotation thus achieved can be utilised further.
(d) One possible method of utilising the energy of rotational motion of the blades of a windmill is to run the turbine.

Q. Question 11
The power generated in a windmill

(a) is more in rainy season since damp air would mean more air mass hitting the blades
(b) depends on the height of the tower
(c) depends on wind velocity
(d) can be increased by planting tall trees close to the tower

Q. 53.The blades of a windmill sweep out a circle of area A. If wind flows with a velocity v perpendicular to the blades of the windmill and its density is d, then the mechanical power received by the windmill?

How does the wind move the blades of a windmill ?

Windmills are installed in an area where the wind speed is low.

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