Wind Mill

Q.

The minimum speed of wind which is required to run a windmill is:

1. 15Km/h

2. 35 Km/h

3. 5 Km/h

4. 25Km/h

Q. Which country is called the country of winds?

Q.

99 Write the uses of the windmill?

Q. Which energy of wind is converted to electricity by a windmill?

Q.

The power generated in a windmill:

1. depends on wind velocity

2. is more in rainy season since damp air would mean more air mass hitting the blades.

3. can be increased by planting tall trees close to the tower

4. depends on the height of the tower

Q. Windmill utilizes the kinetic energy of which resource?

1. wind on the Earth
2. water on the Earth
3. heat from the Sun
4. light from the Sun

Q. A windmill is a:

1. A machine which grinds flour
2. A machine that converts wind energy to rotational energy
3. A machine which stops the wind from flowing
4. None of the above

Q.

How does a wind mill generate electric energy ?

1. potential energy of wind- rotation of wind mill- electrical energy

2. kinetic energy of wind- rotation of wind mill- electrical energy

3. solar energy- rotation of wind mill- electrical energy

4. sea breeze and land breeze- rotation of wind mill- electrical energy

Q.

The power generated in a windmill ______.

1. depends on the height of the tower.

2. is more in rainy season since damp air would mean more air mass hitting the blades.

3. depends on wind velocity.

4. can be increased by planting tall trees close to the tower.

Q.

Choose the incorrect statement regarding wind power:

1. The potential energy content of wind blowing at high altitudes is the source of wind power.

2. Wind hitting at the blades of a windmill causes them to rotate The rotation thus achieved can be utilised further.

3. One possible method of utilising the energy of rotational motion of the blades of a windmill is to run the turbine of an electric generator.

4. It is expected to harness wind power to minimum in open space.

Q.

The power generated in a windmill ___.

1. has no moving parts

2. is high near the cities

3. depends on wind velocity

4. can be increased by planting tall trees close to the tower

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?

1. 1-2-3-4
2. 4-3-2-1
3. 4-1-3-2
4. 3-2-1-4

Q. Through which process does power generation takes place in thermal power plants?

1. Wind blows - Wind converted to steam - Turbine rotates - Electricity produced
2. Coal burnt - Water converted to steam - Turbine rotates - Electricity produced
3. Two nuclei combine - Steam is formed - Turbine rotates - Electricity produced
4. Decomposition of slurry - Converted to methane - Transported via gas outlet

Q.

The power generated in a windmill ___.

1. has no moving parts

2. is high near the cities

3. depends on wind velocity

4. can be increased by planting tall trees close to the tower

Q.

How was wind energy harnessed traditionally?

1. to do mechanical work

2. to lift water

3. all of these

4. to grind food grains