Wind Mill

Q.

Which country is known as the land of windmills?

Q.

Explain the principle of working of a windmill.

Q.

Way of harness of wind energy

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

Q.

The power generated in a windmill________.

Q. Which type/types of power generation involve maximum number of steps of energy conversion? In which power generation is the number minimum?

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. Which of the following facts is not true about wind energy?

1. 
   It is free of cost
2. 
   It is a renewable source of energy
3. Its equipments are very cheap to install in a large area
4. 
   It is a pollution free source of energy

Q.

The more the speed of the wind the less will be the electricity generated

1. True
2. False

Q. For the effective working of wind mills, the minimum wind speed required is

1. 
   $5km/h$
2. 
   $15km/h$
3. 
   $40km/h$
4. 
   $30km/h$

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. heat energy of wind- rotation of wind mill- electrical energy

Q. Arrange the following steps through which electricity is generated in a windmill.

1. Blades rotate
2. Electricity
3. Turbine rotates
4. Wind

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. A windmill is a:

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

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

1. False
2. True

Q.

How was wind energy harnessed traditionally?

1. to do mechanical work

2. to lift water

3. to grind food grains

4. all of these

Q.

___ is the primary source of wind energy.

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.

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 options predicts the correct order of events?

1. 1-2-3-4

2. 4-1-3-2

3. 4-3-2-1

4. 3-2-1-4

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

1. True
2. False
3. Ambiguous
4. Data Insufficient