MEC 511 Midterm: MEC511 Sample Midterm
31 Jan 2019
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Notes: communicating calculators are not allowed, all questions are to be attempted, the mark value of each question is shown in the table below, some data that you may need: Directions: each of the questions or incomplete statements below is followed by several suggested answers or completions. On the exam paper, circle the one that is best. Questions a1 to a5 are worth 2 marks each. Water at 10 c (:=1. 3x10!3 ns/m2) flows over the top surface of a flat plate. The velocity distribution in the water is given by u=20y2+150y, where y is measured perpendicular from the surface of the plate. If the plate is 10m long and 3m wide, the viscous shear force on the top of the plate is: (a) 4. 59 n (b) 5. 85 n (c) 7. 41 n (d) 0. 195 n (e) 1. 95 n. A catalogue states that the discharge head of a pump is 40 metres of water.
