Question

A motor is rated 10 HP . calculate the volume of water it will pump from a depth of 300m in one hour ( taking 1 HP as 750W and density of water as 1000 kg/m^3

Answer 1

Explanation:

Let the measure of the supplementary angles be x and (x + 36). Therefore, measures of the supplementary angles are 72° and (72 + 36) i.e. 108°.25-May-2014

Answer 2

Power = 10 HP = 7500 W

Work done = P*t = 7500 × 3600 = 2.7 × 10⁷

Work done against gravity = 100 m

100m = 2.7 × 10⁷

mass , m = 2.7 × 10⁵ kg

Now,

Density = Mass / Volume

Volume = Mass / Density

Volume = 2.7 × 10⁵ / 10³

Volume = 2.7 × 10²

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