A selected pump operates at 1750 rpm and delivers 4135 gpm at 248 feet of head with a 16 inch impeller. The design of the system requires that the pump deliver only 3700 gpm. What is the new impeller diameter to meet the design flow rate

Acompressor compresses a gas, a pump compresses a liquid. for a given pressure ratio, why does it take more work to compress a gas in a compressor than a liquid in a pump? a)- for a given pressure ratio the average specific volume for a gas is much higher than the average specific volume for a liquid. b)- there is no difference. the only difference is the amount of heat generated (not work) c)- for a given pressure ratio the average volurge for a gas is much higher than the average volume for a liquid. d)-there is no difference