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Calculate area of a pipe if, flow rate is 20 l/min and flow velocity is 5 cm/s.(a) 66.66 cm^2(b) 60 cm^2(c) 62 cm^2(d) 64 cm^2I got this question during an interview.Enquiry is from Pipes, Valves and Fittings topic in chapter Building Blocks of Dairy Processing of Dairy Engineering

Answer» CORRECT OPTION is (a) 66.66 cm^2

To EXPLAIN I WOULD say: Flow rate= 20 litre/min

= 200000 cm^3/60s

= 333.33 cm^3/s

Flow Rate = VELOCITY x Area

333.33cm3/s = 5cm/s x Area

Area = 333.33cm^3/s / 5 cm/s

= 66.66 cm^2.


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