A pipe 1500 m long and 200 mm in diameter is carrying water is laid at a slope of 1 in 200 for the first half length and at a slope of 1 in 100 for the second half length. The pressure at the upper and lower ends are respectively 1 kgf/cm² (98.1 kN/m²) and 0.5 kgf/cm2 (49.05 kN/m2). If friction factor, f= 0.04, then the discharge in cum/sec will be.

The flow is opened to the atmosphere at point D which is fed by a very wide reservoir that has a water surface elevation of (5+) meters as shown in the figure given below. Elevation of the horizontal axis BC is 1 meter. At sections AB the diameter of the pipe is (0.2+- meters and CD the diameter of the 100 pipe is (0.3+: meters. The flow is ideal (inviscid) and absolute atmosphere pressure is 9.81 N/cm?. Considering the pipe's diameter is (0.15+; m at section BC, find the discharges and the 100 а. velocities of the flow at other sections (AE, EB, BC, CF, FD). Draw the energy and hydraulic grade lines of the system. b. Assuming the system discharge is constant and has the value you have found in (a), calculate the minimum pipe diameter that the section BC can take and draw the energy and hydraulic grade lines of this situation. Note: Absolute vapor pressure of water is 2.26 kN/m?. 10 A E 2.5 D B m

A steel pipe is used to drain water from a reservoir that is 50 m above the datum, and water is discharged into the air at the elevation of the datum. The pipe is 1500 m long and 450 mm diameter and 50 mm wall thickness. A valve is installed at the downstream end of the pipe allows a flow rate of 0.71 m³/s. The valve was completely closed in 1.4 sec. Calculate maximum hammer pressure at the valve. The pipe is longitudinally anchored. Eb = 2.1×10° N/m², Ec=1.9×10¹¹ N/m².

Along a 50-m pipeline, there is a half-open globe valve (K = 10), four 90-degree smooth bends (K = 0.45), and six 45-degree elbows (K = 0.15). Ignoring the major head loss, what will be the pressure drop in this pipe if the flow velocity is 1 m/s? Fluid is water: Specific weight = 9810 N/m³. O 0 kPa O 6.35 kPa O 13.81 kPa O 21.67 kPa