Advertisements
Advertisements
प्रश्न
What do you know about wind energy?
Advertisements
उत्तर
The wind is used to produce electricity. When the wind blows, it turns the three large blades of the windmill, which are attached to the turbine. The turbine, which is connected to the generator, converts the energy of the wind into electrical energy.
Wind, like the sun, is nature’s gift to the earth. It is free and widely available.
APPEARS IN
संबंधित प्रश्न
An examples of a renewable source of energy is:
(a) petrol
(b) natural gas
(c) biogas
(d) kerosene
The fuel having the lowest calorific value is:
(a) coal
(b) wood
(c) charcoal
(d) kerosene
Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO2while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
Describe how fossil fuels were formed.
The product of petroleum used to drive heavy vehicles like trucks is:
(a) petrol
(b) kerosene
(c) diesel
(d) carbon oxide
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
Name the substance X.
Name the original source of wind energy.
What should be the minimum wind speed for the satisfactory working of a wind-powered electric generator?
What is the function of anaerobic micro-organisms such as anaerobic bacteria in a biogas plant?
What is biomass? Give three examples of biomass.
Fill in the blank
__________ are examples of renewable energy resources.
Fill in the blank
Coal, petroleum, and natural gas are _________fuels.
Choose the correct answer.
Windmills have been used for many centuries in
What is the main difference between renewable and non-renewable energy resources?
Name two forms of sea energy.
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
Coal is one of the ______ used to cook food.
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Nutsgilh is an example of inexhaustible natural resources.
Fill in the blanks and complete the story.
About 300 million years ago, the earth had dense ______ in low lying wetland areas. Due to natural processes like ______, these forests got buried under the ______. As more ______ deposited over them, they were compressed. The ______ also rose as they sank deeper and deeper. Under high ______ and high ______, dead plants got slowly converted into coal.
