You need a pump that will develop at least $40 \mathrm{psi}$ at a flow rate of $300 \mathrm{gpm}$ of water. What combination of pump size, motor speed, and impeller diameter from the pump characteristics in Appendix H would be the best for this application? State your reasons for the choice you make.

What are the pump efficiency, motor horsepower and torque requirement, and NPSH for the pump you choose at these operating conditions?