Page 1 of 4 CEME 2003 Civil Engineering Hydraulics In-class Quiz No. 1 Wednesday Week 6 7 April 2021 Total Points (35 Marks) Writing Time: Upload Time: Total Duration: 50 mins 10 mins 60 mins INSTRUCTIONS FOR CANDIDATES  Candidates must answer 3 questions, ALL of which should be attempted.  Not all questions are of equal value. Please plan your time accordingly.  Show all calculations and assumptions.  If you believe that a parameter or an important piece of information has been inadvertently omitted by the examiner, assume a suitable value, clearly stating it, and continue with the solution.  Responses must be uploaded to the submission portal within the time limit (i.e. 3:00 pm)*. Time for uploading your responses has already been factored into the quiz length.  It is your responsibility to check that you have uploaded the correct file. PERMITTED MATERIALS  This is open-book, time-limited quiz. You can use any course materials.  The quiz is an individual task and is being conducted under test conditions. No discussion or consultation about the quiz with any third party is permitted during the quiz period.  Students found in breach of the above instructions may be reported through the University’s Academic Integrity Policy. * The submission deadline for students with alternative exam arrangements may differ slightly. QUESTIONS BEGIN OVERLEAF Page 2 of 4 QUESTION 1 (13 marks) (a) Determine the deflection of the manometer, h, in the system shown in Figure 1, knowing that the specific gravity of Mercury is 13.6. (5 Marks) Figure 1: Configuration of the manometer system (b) The shaft of the gate will fail at a moment of 145 kN.m. Determine the maximum value of the liquid depth h. (8 Marks) Figure 2: Configuration of a submerged gate Page 3 of 4 QUESTION 2 (15 marks) (a) If the overall efficiency of the system and turbine in Figure 3 is 80 percent, what power is produced for H= 58 m and Q= 32 m3/s. (3 Marks) Figure 3: Pipeline and turbine system configuration. (b) Figure 4 shows a horizontal bend that carries water at 10oC. The interior volume of the bend is 0.3 m3, the mass of the bend material is 250 kg, D1 = 80 cm, V1 = 2.5 m/s, and the pressure at section 1 is 50 kPa. Neglect any losses in the bend. If D2 = 40 cm, determine the force components at the flange to hold the bend in place. (12 Marks) Figure 4: Horizontal bend p2 Page 4 of 4 QUESTION 3 (7 marks) (a) A particular fluid has a density of 1000 kg/m3 and absolute viscosity of 6.7x10-2 Ns/m2 at 20oC. Find the corresponding (i) kinematic viscosity, (ii) specific weight and (iii) specific gravity. (3 Marks) (a) A smooth pipe 300 mm in diameter is designed to carry oil, with a kinematic viscosity of 4x10-6 m2/s, is to be modelled with a smooth pipe 15 cm in diameter carrying water at 20oC. If the mean velocity of the prototype is 1.5 m/s, what should the mean velocity of the water in the model be to ensure similitude? (4 Marks)





























































































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