An alumnus of BIT-Sindri in Dhanbad, SN Singh and two others invented a unique swing which is used to fill the water tank on the roof as well as to produce electricity by converting mechanical energy ...
Wondering how to make a hand pump water well? Make a homemade PVC manual deep well water pump, that pumps water as deep as 60 feet, in case you’re experiencing any power outages. After several power ...
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