A closed tank contains liquified butane gas whose specific gravity is 0.60. The tank pressure is 1.7 Mpa gage which is also the equilibrium vapor pressure of butane at the pumping temperature. Suction lines losses is 1.5m of gas and the static elevation gain is 4m. What is the NET POSITIVE SUCTION HEAD AVAILABLE?(NPSHa)

P-4 fuel (SG = 0.77) flows rough the Venturi meter hown in the figure below with a velocity Vo= 14.8 ft/s in the d1=6.00-in. pipe. In viscous effects are negligible, determine the elevation, h, of the fuel in the open tube connected to the throat of the Venturi meter. Assume h1= 7.70 in., h2= 5.70 ft, d2= 4.00 in.

3- The pump of waste water of concentration (1.5 mg/liter) treatment plant system is powered by a (15 kw) electric motor whose efficiency is (90%). The water flow rate of the pump is (50 L/sec).The diameter of the inlet and outlet pipes are the same, and the elevation difference across the pump is negligible. If the pressure at the inlet and outlet of the pump are measured to be (100 Kpa) and (300 kpa) absolute, respectively. Determine the mechanical efficiency of the pump.

The pumping system below is used in a manufacturing process involving glycerin. Find the minimum pump head, E (P), required to prevent contamination of the piping system from reservoir B. the temperature of the glycerin is 60°F. Assume no losses in pipe 2 which connects reservoir B and node A. The check valve only allows flow from reservoir B to node A.