Q.

A siphon has a uniform circular base of diameter 8πcm with its crests 1.8 m above water level as in figure. The absolute pressure at the crest level A(in kPa) is__________.Use P0=105N/m2 and g=10m/s2

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answer is 46.

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Detailed Solution

Velocity of flow =2gh=2×10×3.6=62m/sBernoulli's theorem between surface and APatm =P+12ρv2+ρghP=Patm −12ρv2−ρgh=105−12×103(62)2−103×10×1.8 =4.6×104N/m2=46kPa
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A siphon has a uniform circular base of diameter 8πcm with its crests 1.8 m above water level as in figure. The absolute pressure at the crest level A(in kPa) is__________.Use P0=105N/m2 and g=10m/s2