Water is flowing at a rate of 0.15 ft3/s in a 6 inch diameter pipe. the water then goes through a sudden contraction to a 2 inch diameter pipe. what is the head loss through this contraction

Head loss=0.00366 ft

Explanation:

Given :Water flow rate Q=0.15

         = 6 inch=0.5 ft

        =2 inch=0.1667 ft

As we know that Q=AV

So

     =0.687 ft/sec

We know that Head loss due to sudden contraction

If nothing is given then take K=0.5

So head loss

                                    =0.00366 ft

So head loss=0.00366 ft

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