For the problem ahead, assuming that the pump equations are in the form: hpF di - bi Qi?; where h, is in feet, Q is in gpm and the coefficients a; and b are known constants for each pump i=l, 2 or 3. Then, fomulate IN YOUR OWN WORDS the steps (procedure with equations) to calculate the flow and operation point of each pump. Use the pump equations and the series/parallel condition shown ahead. NOTE: do not solve the problem mumerically, only state the complete procedure to be solve, write down the necessary equations. Also, mention what will happen if a valve in the pump is closed. Three pumps are placed in the following arrangement as indicated in Fig. P4-11: Rotor Goulds designiation Fig. Pump rpm dia. 1x11-3 8 in. 8 in. 4-16 3,500 3,550 1,750 2x3-10 4-16 2x3-13 10 in. 4-18 FIGURE P4-11 If the system characteristic is H= 120.0+0.016586Q73, where H is in ft-lbf/lbm and Q is in gpm, find the operating point for each pump. Find the power required for each pump if the fluid density is 53.7 lbm/ft'. 123