a) A centrifugal pump running at 1200 rpm gave the following results in a test: The pump is designed to deliver water from one tank to another 11 meters higher. If the losses due to friction and bends can be represented by an additional 83Q2 m (where Q is in m³/s) of head, calculate the pump discharge and head at the operating point. Show your graphs. b) Assuming that the efficiency and system characteristic remain unchanged, use the data in the table in part (a) to deduce the pump flow rates and heads when the pump operates at 900rpm. Show the new H-Q curve for the pump in a graph. What would be the new operating point? [The word limit is 100 words].

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