Energy Power
Energy Power
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Energy & power?
A pupm can fill a tank of volume 30m^3, 40m above ground, in 15 min. If the efficiency of the pump is 30%, find the electrical energy consumed by the pump.
My doubt: what is efficiency, how is it calculated and how do you incorporate it in this problem?
A pump can fill a tank of volume 30m^3, 40m above ground, in 15 min. If the efficiency of the pump is 30%, how much electrical energy is consumed by the pump?
My doubt : What is efficiency, how is it calculatd and how is it incorporated in this problem? Next, how do you find the energy required totally?
Efficiency is the ratio of energy into a system to energy out of a system. With a pump of 30% efficiency, for every watt-hour you supply to the pump, only 0.3 watt-hours is used to pump the liquid.
The rest is spent generating heat and overcoming the mechanical resistances in the system.
Figure out how much energy you need to raise 30m³ of liquid 40m in 15 min, then divide this by 0.3 to find out how much energy you have to supply the pump.
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