Through the circuit in the figure, a pump pumps water from reservoir I to reservoir II and to the N flow surface open to the atmosphere. Q$3=180$lt$/$s$,$ L$1=520$m$,$ D$1=50$cm$,$ f$2=0\mathrm{.}021,$ L$2=1080$m$,$ D$2=45$cm$,$ f$3=0\mathrm{.}022,$ L$3=750$m$,$ D$3=27$cm$,$ f$4=0\mathrm{.}02,$ L$4=320$m$,$ z$4=148$m$,$ z$3=125$m$.$ Since the overall efficiency of the pump is ng$=0\mathrm{.}67,$ find the power it draws from the engine. Determine the load line of the system with the diameter of the E$=$N line