Hydraulics - Engineering

Q1:

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 (v22 - v12)/2g

B (v1 - v2)2/2g

C (v2 - v1)2/2g

D (v1 + v2)2/2g.

ANS:B - (v1 - v2)2/2g

V1^2 - V2^2/2g is the right one.