A simple turbo machine is constructed from a disk with two internal ducts which exit tangentially through

Question:

A simple turbo machine is constructed from a disk with two internal ducts which exit tangentially through square holes, as in the figure. Water at 20C enters the disk at the center, as shown. The disk must drive, at 250 rev/min, a small device whose retarding torque is 1.5 N⋅m. What is the proper mass flow of water, in kg/s?

A simple turbo machine is constructed