Question
Water flows into a tank 200 m x 150 m through a rectangular pipe 1.5 m x 1.25 m @ kmph. In what time (in minutes ) will the water rise by 2 metres ?
Answer: Option A
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Volume required in the tank = (200 x 150 x 2) `m^3` = 60000 `m^3`
Length of water column flown in 1 min = `((20 xx 1000)/(60)) m = 1000/3 m`
Volume flown per minute = `(1.5 xx 1.25 xx 1000/3) m^3 = 625 m^3`
`:.` Required time = `(60000/625)` min = 96 min.
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