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.

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Solution

Option (b) is correct.
The potential energy content of wind blowing at high altitudes is not the source of wind power. It is actually the kinetic energy content of wind that makes blades to rotate.

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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. Consider the following processes:
1. Wind rotates the blades of the windmill.
2. Electrical energy produced.
3. Turbine rotates.
4. Blowing of wind.
Which of the following predicts the correct order of events?

Q. A windmill is a machine that converts wind energy to rotational energy.

Consider the following processes:
1. Wind rotates the blades of the windmill
2. Electrical energy produced
3. Turbine rotates
4. Blowing of wind
Which of the following predicts the correct order of events?

A wind-powered generator converts wind energy into electrical energy. Assume that the generator converts a fixed fraction of the wind energy intercepted by its blades into electrical energy. For wind speed v, the electrical power output will be proportional to

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Option (b) is correct. The potential energy content of wind blowing at high altitudes is not the source of wind power. It is actually the kinetic energy content of wind that makes blades to rotate.

Option (b) is correct.
The potential energy content of wind blowing at high altitudes is not the source of wind power. It is actually the kinetic energy content of wind that makes blades to rotate.