Q No. 6:
What are the limitations of extracting energy from −
(a)
the wind? (b) waves? (c) tides?
Ans:
Limitations of extracting energy from above sources are
(a) A windmill requires wind of speed more than 15 km/h to
generate electricity from wind energy. Also large numbers of windmills are
required to get feasible output which covers a large area.
(b)
Very strong ocean waves are
required in order to extract energy from waves. But these are not available all
the time?
(c)
Very high tides are required in
order to extract energy from tides. But tides depends on the relative positions
of the Sun, moon, and the Earth.
This much so I also know. Pls tell something extra.
ReplyDeleteThis much so I also know. Pls tell something extra.
ReplyDeleteGo ask the teachers then ._.
ReplyDeleteWrite
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ReplyDeleteIt's enough bcos 2marks question
ReplyDeleteIt is a 3mark question for us
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