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प्रश्न
State two advantages and disadvantages of using wind energy for producing electricity.
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उत्तर
Advantages:
(i) Wind is free and will run not (renewable sources).
(ii) Wind energy does not create greenhouse gases.
Disadvantages:
(i) The wind farms can be established only at places near the coastal areas where the wind blows around the year steadily with a speed not less than 15 Km h-1.
(ii) The establishment of the wind farm is expensive.
संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
Give one example of a body that has potential energy, due to its position at a height.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A compressed spring
Differentiate between the potential energy (U) and the kinetic energy (K).
What kind of energy is possessed in a situation when?
A shooting arrow.
State two advantages and two disadvantages of using hydro-energy for producing electricity.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
A body of mass m falls from a height h1 to a height h2, above the ground (h1 > h2). What is the loss of potential energy?
