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civil engineering hydraulics
1. If v1 and v2 are the velocities of flow before and after sudden enlargement in a pipe, the head loss given by Carnot and Borda equation, is
(A): (v1 + v2)2/2g.
(B): (v1 - v2)2/2g
(C): (v2 - v1)2/2g
(D): (v22 - v12)/2g
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