What is the formula for the fundamental relationship for the design of the ventilation system?
(a) head of air inside the machine = hydrodynamic resistance * volume of air passing^2
(b) head of air inside the machine = hydrodynamic resistance + volume of air passing^2
(c) head of air inside the machine = hydrodynamic resistance – volume of air passing^2
(d) head of air inside the machine = hydrodynamic resistance / volume of air passing^2
I got this question in my homework.
This interesting question is from Design of Fan topic in portion Aspects of Design of Mechanical Parts of Design of Electrical Machines