1.

A pump on the ground floor of a building can pump up water to fill a tank of volume 30 m3 in 12 min. If the tank is 40 m above the ground, and the efficiency of the pump is 40%, how much electric power is consumed by the pump ? no spam plz (:​

Answer»

olume of a tank V = 30 m³time required to fill a tank t = 12 minheight of a tank H = 40 mefficiency of the pump η 40%To FIND:electric power is consumed by the pump =? Explanation:The volume of water in a tank =  30 m³The time required to fill a tank is given by:         12 × 60 = 720 secThe density of water is given by:         d = 1000 kg/m³Mass of water in a tank is given by         mass = volume × density               m = V × d                    = 30 × 1000                    = 30000                m = 30 kgNow, we have to calculate the power required to fill the tank in 12 min.CONSIDER this power is input power.                                      P = 16.66 WNow, we have to find the electric power is consumed by the pump has efficiency is 40%.Consider the power is OUTPUT power.Efficiency is the ratio of output power to input power.                        P = 6.664 WThe electric power is consumed by the pump is 6.664 W.



Discussion

No Comment Found

Related InterviewSolutions