Question

The slurry
manure, rich in nitrogen and phosphorous. The large-scale utilisa
of bio-waste and sewage material provides a safe and efficient meth
waste-disposal besides supplying energy and manure. Do you
that bio-mass is a renewable source of energy?
Wind Energy XDP
We saw in Class IX how unequal heating of the landmass
and water bodies by solar radiation generates air movement
and causes winds to blow. This kinetic energy of the wind
can be used to do work. This energy was harnessed by
windmills in the past to do mechanical work. For example,
in a water-lifting pump, the rotatory motion of windmill is
utilised to lift water from a well. Today, wind energy is also
used to generate electricity. A windmill essentially consists
of a structure similar to a large electric fan that is erected at
some height on a rigid support (Fig. 14.5).
To generate electricity, the rotatory motion of the windmill
is used to turn the turbine of the electric generator. The​

Answer 1

Answer:

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