Compute all parts of given problem:
Problem: A forward - curve centrifugal fan has 32 blades and rotates at 3000 rpm. It delivers 5000 cfm of air with a static pressure of 5 in of water.
Part A: Find the blade passing frequency and its first 2 harmonics?
Part B: Find the octave band sound power level?
Part C: Find the overall sound power level?
Please show all work and steps to determine the octave band sound power level.