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MECH1400
1. This is an open book exam; you can use online resources.
2. You have 48 hours to complete and submit the quiz, it is expected it will take the
average student around 90-120 minutes to complete
3. Late submissions will NOT be accepted!
4. You must not collude with other students, do not discuss answers with them, share
information etc.
5. All written answers need to be typed (handwritten answers are only accepted for
calculations) and submitted in PDF format as one single document.
6. Clearly label which question you are answering in your document and present them
in the SAME order they appear in the question sheet. If it is not clear which
question your answer relates to, it will not be marked.
7. Any answers requiring calculations must show all working, be completed by hand,
photographed, and embedded within the same PDF document.
8. Physical copies of all hand calculations and drawings must be kept for 6 weeks and
provided to the UoS coordinator if requested.
9. Explain any assumptions you make, state any material properties used etc.
10. Provide answers in YOUR OWN WORDS, copying text from slides, tutorials or any
other resource will be considered academic dishonesty.
11. Do not add your name to your submitted document, they are marked anonymously,
Canvas will track submissions.
Section 1 (50 marks)
Part 1
1.1. List and explain three reasons why Engineers need technical drawings [3x2=6 marks]
1.2. List five main features that technical engineering detail drawings must contain and
explain why the feature is important [5 marks]
1.3. Explain the main differences between detail and assembly drawings [4 marks]
1.4. With relation to mechanical design, use two examples to describe and explain what is
meant by “constrained optimisation” [4 marks]
1.5. List five material properties of interest in mechanical design and explain why the
property is important when designing machinery [5 marks]
1.6. Using an example, explain the concept of surface finishes and why they are important
in mechanical design [3 marks]
1.7 Using an example, explain the concept of tolerances and why they are important in
mechanical design [3 marks]
1.8. Explain the difference between cutting feeds and cutting speeds and what impact they
can have on machining [4 marks]
Page 2 of 9
1.9. Describe what is meant by “additive manufacturing” and give an example of where it
might be used [4 marks]
1.10. Explain why water cutting may be preferred over laser machining for a part? [2 marks]
1.11. For the two-part assembly shown below, list and describe the processes required to
manufacture the assembled part (list steps in order using equipment available in the AMME
student workshop. The two threaded holes are M12 and M3. State any reasonable assumptions
you make. [10 marks]
Page 3 of 9
Section 2 Engineering Analysis (50 marks)
2.1a Which of the machines shown in the figures above, represents a reciprocating 2-stroke
petrol cycle engine (1 Mark).
2.1 b Provide one reason why you think your choice is correct and name one disadvantage of
the reciprocating 2-stroke petrol engine (2 Marks).
2.2 a On the stress and strain diagram shown above, discuss the region of the diagram that is
of most interest to a design engineer designing a compressed air powered engine, and include
your reasoning why. (2 Marks)
2.2 b Discuss a region of the stress and strain diagram that is important when considering
fasteners placed under very high tensile loads. (1 Mark)
Page 4 of 9
2.3 The solid (not hollow) 3mm diameter aluminium rivet shown in the image above has
undergone a shear failure;
2.3.a. Calculate the value of the force F in newtons that has caused the rivet to shear? (2.0
Marks)
2.3.b If the aluminium rivet was replaced with a mild steel rivet, what is the revised value of
the Force F (1.0 Mark)
2.4 a Calculate the mass (in grams) of a solid brass cylindrical piston; 19mm in diameter and
19mm in length. (1.0 Marks)