Answer:
volumetric efficeincy = 0.315%
Step-by-step explanation:
Given data:
outside diameter = 4.25 inch
inside diameter = 3.25 inch
flow rate V = 1800 rpm
actual flow rate Qa = 29gpm = 6699 inch3/min
volume of pump can be determine by using below formula



theoretical flow rate is given as Qt

= 11.78*1800
=



volumetric efficeincy = 0.315%