Show in Figure 1 is the water flow system. The velocity head difference is = 2.0m. Volume flow rate is 2g 0.5 m³/s. The heights are h1=1.0 m and h2=2.0 m, respectively. The power output from the motor is P=7.848 kW, e = 80%. The energy added by the pump is h = 3.0m. The energy loss between point 1 A 0 and 2 is h = 0.2 m. 3) Select the correct expression of the pressure head difference between point 1 and 2 0 v²-v², 2 1 M, motor 1 2g O v²-1²₂ 2g 01²₁-1²₂2 2g 2g Motor Pump •+h2-h₂ +h+h₁ R -h Valve A Flow L +h2+h-h₂-h₂ R (h1+h2) + h +h-he-h₂ A R L h1 h2 Motor P₂ P₁ 7

For a 6.25-inch Model 4075 pump operated at 1160 rpm, if 450 GPM of water is to be delivered, what will be the estimated pump head in ft? HEAD IN FEET 30 25 0 0 0 10 O 6 ft 7.25" (184mm) 20 7.00" (178mm). 6.75" (171mm). 6.50" (165mm)] 15 6.25" (159mm). 5 O 16 ft O 20 ft O 12 ft aco® L/SEC 5 OT 10 Model 4075 FI & CI Series 15 -6-6 ⁰ dº 20 ANA 888 778 25 REQUIRED NPSH do 1160 RPM November 1, 2010 K ・dº- [M 90 do 30 8800 81 1HP(.75KW) DeJ kin do 60% 35 do 50 Curve no. 2175 Min. Imp. Dia. 6.25" Size 5 x 4 x 7.0 40 45 3HP(2.2KW), 2HP(1 5KW) 5HP(1 1KW)> CURVES BASED ON CLEAR WATER WITH SPECIFIC GRAVITY OF 1.0 L 75 150 225 300 375 450 525 600 675 FLOW IN GALLONS PER MINUTE NOWONG FEET 15 12 7 6 2 1 NPSH 758 50 5 HEAD IN METERS 45 586888 KPO 60 40 20 10 LO HEAD IN KILOPASCALS

Show in Figure 1 is the water flow system. The velocity head difference is .  Volume flow rate is .  The heights are  and , respectively.  The power output from the motor is , . The energy added by the pump is . The energy loss between point 1 and 2 is . Calculate  4)  the pressure head difference  in meter_________ m

Water is contained in both sides of the cylinder system shown below and the valve is closed. If the pressure on the right hand side of the valve is 119.6 kPa, what is the height in tank B, i.e. what is hp 1? Assume that the atmospheric pressure is 100 kPa, the acceleration due to gravity is 9.807 m/s² and the density of water is 1000 kg/m³. A Po B ha,1=1.5 m Water Water hg,1 1.0 m 0.5 m Pval,left Pyal,right A) 1.0 m B) 1.5 m C) 2.0 m D) 2.5 m