11th Class Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति

  • question_answer 15)
    A pump on the ground floor of a building can pump water to fill a tank of volume  in 15 min If the tank is 40 m above the ground, and the efficiency of the pump is 30% i much electric power is consumed by the pump ?  

    Answer:

    Mass of water = Volume x density    Output power   As  Efficiency   Input power   = 43.6 kW.  


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