a) The thrust T of a screw propeller is dependent upon the diameter D, speed of advance V, revolutions per second N, fluid density p and the co-efficient of viscosity u. Experiments were performed with various models of propellers. What are the dimensionless groups to which the data should be plotted? Are these similarities attainable? If not why? AN, (8) b) Compare and contrast the velocity profile and comment on them using any two practical examples. of laminar flow and turbulent flow in pipe AP (5) c) When branch pipelines are connected to main pipelines, sometimes Y-junctions or fitting branched pipelines to main pipelines by formation of holes in main pipelines are used. Which one is a better choice? AN (7) d) Estimate the specific energy E, for a flow through a trapezoidal channel at a critical depth with assumptions made. Do you think this the assumption would withstand the test of time? Bottom width b and side slope 1 vertical to n horizontal. State and justify