a pump can throw up 10 …
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Sia ? 3 years, 11 months ago
h is the height upto which coal is to be taken out.
1 quintal = 100 kg
E = 1000 ×10 ×120 = 1200000 j
power = energy/time
time = 1 hour = 3600 s
Power = 1200000/3600 = 1000/3 watt
efficiency = 80%
Power of the engine = 10003 × 80100 = 266.66 watt</div>
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