(b) Answer the following in relation to flow through orifices. (i) Explain why the coefficient of contraction...

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Civil Engineering

(b) Answer the following in relation to flow throughorifices.

(i) Explain why the coefficient of contraction is included inthe discharge equation for flow through a small orifice. [3marks]

(ii) If a small orifice meter with a diameter of 0.016 mdischarges flow at a rate of 6 x 10-4 m3 /s under a head of 1.6 m,what is the value of the discharge coefficient? [2 marks]

(iii) Explain the hydraulic difference between a small orificeand a large orifice.

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