代做CIVILENG 2003 Civil Engineering Hydraulics Practice Quiz No. 1代做Python程序

CIVILENG 2003 Civil Engineering Hydraulics

Practice Quiz No. 1

Practice Quiz

Total Points (30 Marks)

Total writing time	75 minutes
Total upload time	15 minutes
Total quiz time	90 minutes
Late penalty	100% late penalty - Students who submit after the due time but have not contacted the course coordinator via email before the due time will receive zero marks for the submission

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*. 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 an open-book, open-resource quiz. You are permitted to access your notes and any

material on MyUni. You are also permitted to access websites like Wolfram Alpha, Symbolab, Desmos, etc.

* The submission deadline for students with an access plan may differ slightly.

QUESTIONS BEGIN OVERLEAF

[Please watch the quiz logistics video as part of your preparations]

QUESTION 1 (12 marks)

(a)       Determine the gauge pressure at the centre of the pipe A in Figure 1. If the barometric pressure is 760 mm-Hg, what would be the equivalent absolute pressure? (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. (7 Marks)

Figure 2: Configuration of a submerged gate

QUESTION 2 (13 marks)

(a)       If the overall efficiency of the system and turbine in Figure 3 is 80 percent, what power is produced for H= 60 mand Q= 30 m3/s.   (3 Marks)

Figure 3: Pipeline and turbine system configuration.

(b)      Because of a change in the ground slope,a bendis placed between two sections of a pipeline (Figure 4): the first section is horizontal, while the second section has a slope of 30° downwards. The flow through the bend is 1 m3/s (water at T=10 °C), and, at entrance to the bend, the pressure head is equal to 55 m of water. The internal volume of the bend is 0.5 m3  and the bend weight is 3 kg, while the cross-sectional area of the bend is 0.5 m2. Compute the vertical force Fz  and the horizontal force Fx that the  bend joints  have to  resist.  Neglect  losses  in  the  bend  and  neglect the difference in elevation between the entrance and the exit of the bend. (10 marks)

Figure 4: Vertical profile of the pipeline.

QUESTION 3 (5 marks)

(a)      A particular fluid has a density of 880 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)

(b)      A 30 cm tall hard plastic block is sitting in 10oC temperature water. It has a specific weight of 8000 N/m3. What is the draft of the block (i.e. what is the submerged length of the block)? (2 Marks)