Part 1 A pipe takes water from the reservoir and discharges it as shown in the figure. Assuming frictionless flow, the velocity of water at C is: a) 8 m/s b) 8.9 m/s c) 25 m/s d) 28 m/s 40m 8m Part 2 A 5m diameter tank discharges 68C water through a sharp edged 25 mm diameter orifice with coefficient velocity of 0.98, coefficient of contraction of 0.63 and coefficient of discharge of 0.62. The original water depth is 4m and the tank is continually pressurized to 350 kPa. Answer the following: 2.1 The original head at the orifice is: a) 35.7 m b) 39.7 m c) 360 m d) 354 m 2.2 The head at the orifice just before emptying tank is: a) 35.7 m b) 31.7 m c) 357 m d) 350 m 2.3 The time to empty the tank is: Part 3 a) 16.2 hrs b) 3.24 hrs c) 2.64 hrs d) 1.24 hrs A pump deliver 1800 liters per minute against a total head of 60 m operating at 1750 rpm. Operating condition have increased the total head to 110 m. The rpm that the pump should be operated to achieve this new head at the same efficiency is: a) 5882 rpm b) 3208 rpm c) 2370 rpm d) 955 rpm