1.

KIC5) WORK-POWER-ENERCump set of efficiency 80 %, lifts 800in 19.6 seconds over a headerlitres of water20 m. Its input power is) 64 kW2) 40 kW 3) 10 kw 4) 196 kwweighina 1000 ka is aning ne

Answer»

given the volut of water is 800liters

so, mass of water is 800kg ... ( density is 1kg/l)

now 80% of power = Mgh/t => 0.8p = 800*9.8*20/19.6 = 8000=> power = 8000/0.8 = 10000 watt = 10kw

option 3



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