Theory of Intelligence
11TH•Physics•Work Energy And Power•Question 7

Solution

An electrical motor of one horse power is used to run a water pump. Water pump takes $15$ minutes to fill a tank of $400$ litres at a height of $10\,\mathrm{m}$ ($1\,\mathrm{hp} = 746$ watts). Find:

Solution

  • Part (a): 671.4 kJ671.4\,\mathrm{kJ}
  • Part (b): 39.2 kJ39.2\,\mathrm{kJ}

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