Q. 6 a An air distribution system shown in Fig. 1. The air supply and equivalent lengths of ducts as shown in figure. The velocity of air is limited to
300(m)/(min)as per noise level consideration. The ducts of rectangular section and one side of each duct is
40cm. Find the Size of each duct section for the system by the equal friction method. Figure 1. Air distribution system(Flow rates inemin) CIDS