A pipe of 100 mm diameter is fitted horizontally to a water tank. The pipe suddenly expands to 200 mm diameter at the end of first 10 m of its length. For the remaining 15 m of its length, the diameter remains uniform at 200 mm. The height of water level in the tank is 5 m above the axis of the pipe. Determine the velocity of flow at the exit of the pipeline considering all losses. Assume Darcy's frictional coefficient f= 0.01 for the two sections of the pipe.