1. List possible causes for differences between your predicted values and experimental values of the pump characteristic curves for pumps in series or parallel.

2. Given the data for reference pump (N = 1500 rpm) collected/derived in this lab, use similarity laws to predict the values of discharge and head for pumps rotating at 2400 rev/min. Provide a table with the predicted values of discharge and head for a single pump, pumps in parallel, and pumps in series rotating at 2400 rev/min.

3. Given for these types of pumps the head increase (Ah) is related to the flow rate (Q) by Ah = a-bQn (i) " Obtain the values of a b and n and discuss their significance. Using Eq(i) draw performance curves for series and parallel pumps arrangements. Give critical comments. 8

1. List possible causes for differences between your predicted values and experimental values of the pump characteristic curves for pumps in series or parallel. 2. Given the data for reference pump (N=1500rpm) collected/derived in this lab, use similarity laws to predict the values of discharge and head for pumps rotating at 2400rev/min. Provide a table with the predicted values of discharge and head for a single pump, pumps in parallel, and pumps in series rotating at 2400rev/min. 3. Given for these types of pumps the head increase (h) is related to the flow rate (Q) by h=abQn Obtain the values of a,b and n and discuss their significance. Using Eq(i) draw performance curves for series and parallel pumps arrangements. Give critical comments