a) 14 b) [2] c) 14 Describe how the principle of positive displacement pump is different from that of the dynamic pump Determine the maximum theoretical limit for the suction head of a pump when water at the sump is at atmospheric pressure and the temperature of water is 25C. Glycerin at 40C with p = 1252 kg/m3 and 4 = 0.27 kg/m-s is flowing through a 1.5- cm-diameter, 25-m-long pipe that discharges into the atmosphere at 100 kPa. The flow rate through the pipe is 0.075 L/s. Determine (a) the absolute pressure 25 m before the pipe exit, (b) the head loss, and (c) the required pumping power. Discuss the following terms : (1) Major loss, (ii) Laminar flow, (iii) Turbulent flow, and (iv) Reynolds Number. "With variation in valve opening, flow rate of centrifugal pump changes but for positive displacement pump it doesn't change - explain this statement. A single acting reciprocating pump has a bore of 10 cm, stroke of 15 cm, and speed of 90 rpm. Static suction and discharge head of the pump are 5 m and 10 m, respectively. Calculate the theoretical discharge and power required. a) 141 b) [3] c) [3]