Question: A pump with an 8-in diameter impeller is operating at 1750 rpm and delivering 40 gpm with a total dynamic head of 55 ft. The

A pump with an 8-in diameter impeller is operating at 1750 rpm and delivering 40 gpm with a total dynamic head of 55 ft. The pumps brake horsepower (BHP) is 1.2 hp under these conditions. Assume constant efficiency.

a. Approximate the pumps capacity if impeller size is increased to 10 in.

b. Approximate the pumps capacity if pump speed is increased to 3450 rpm.

c. Approximate the pumps total dynamic head if impeller size is increased to 10 in.

d. Approximate the pumps total dynamic if pump speed is increased to 3450 rpm.

e. Approximate BHP if impeller size is increased to 10 in.

f. Approximate BHP if pump speed is increased to 3450 rpm.

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