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प्रश्न
What should be the minimum wind speed for the satisfactory working of a wind-powered electric generator?
उत्तर
The minimum wind speed for the satisfactory working of a wind-powered electric generator is 15 km/h.
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संबंधित प्रश्न
What are the various steps which can be taken to control (or reduce) pollution caused by burning fossil fuels?
Why is biogas considered an ideal fuel for domestic use?
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
The constituent of biogas which makes it an excellent fuel is:
(a) butane
(b) methane
(c) propane
(d) ethane
State whether the following is True or False.
Coal takes millions of years to form.
Can you tell?
What is ‘green energy’?
Can you tell?
Which forms of energy from the sun are used in solar energy devices?
Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?
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.
Why petrol is exhaustible natural resource whereas sunlight is not? Explain.
