Assignment:
A control valve operates from a 3- to 15-psi control signal. To have a 40-gal/min flow rate, express the signal input in both psi and percent of range if (a) it is a linear valve from 0 to 90 gal/min, and (b) it is an equal percentage valve with and Qmin = 15 gal/min.
Provide complete and step by step solution for the question and show calculations and use formulas.