Safety and Reliability Engineering Past Paper
EG40JQ/12
UNIVERSITY OF ABERDEEN
SESSION 2011 – 2012
Degree Examination in EG40JQ SAFETY AND RELIABILITY ENGINEERING
Friday 20 January 2012
Notes: (i)
(ii)
2.00 p.m. – 5.00 p.m.
Candidates ARE permitted to use an approved calculator
Data sheets are attached to the paper.
Candidates should attempt all FIVE questions.
REGULATIONS:
(i)
You must not have in your possession any material other than that expressly permitted in the rules appropriate to this examination. Where this is permitted, such material must not be amended, annotated or modified in any way.
(ii)
You must not have in your possession any material that could be determined as giving you an advantage in the examination.
(iii)
You must not attempt to communicate with another candidate during the exam, either orally or by passing written material, or by showing material to another candidate, nor must you attempt to view another candidate’s work.
Failure to comply with the above will be regarded as cheating and will lead to disciplinary action as indicated in the Academic Quality Handbook (www.abdn.ac.uk/registry/quality/appendix7x1.pdf)
Section 4.14 and 5.
You may not start reading the questions or writing until instructed to do so by the Invigilator.
1/7
EG40JQ/12
Question 1:
a)
How do you define Risk? Explain the different risk assessment methods highlighting the relevant tools for each of these methods.
[8 marks]
b) The diameter of the dot produced by a printer is normally distributed with a mean diameter of
0.005 cm and a standard deviation of 0.001 cm.
i) What is the probability that the diameter of a dot exceeds 0.0065 cm?
[2 marks] ii) What is the probability that a diameter is between 0.0035 and 0.0065 cm?
[2 marks] iii) What standard deviation of diameters is needed so that the probability in part ( ii) is 0.995?
[3 marks]
c) A plastic casing for a magnetic disk is composed of two halves. The thickness of each half is
UNIVERSITY OF ABERDEEN
SESSION 2011 – 2012
Degree Examination in EG40JQ SAFETY AND RELIABILITY ENGINEERING
Friday 20 January 2012
Notes: (i)
(ii)
2.00 p.m. – 5.00 p.m.
Candidates ARE permitted to use an approved calculator
Data sheets are attached to the paper.
Candidates should attempt all FIVE questions.
REGULATIONS:
(i)
You must not have in your possession any material other than that expressly permitted in the rules appropriate to this examination. Where this is permitted, such material must not be amended, annotated or modified in any way.
(ii)
You must not have in your possession any material that could be determined as giving you an advantage in the examination.
(iii)
You must not attempt to communicate with another candidate during the exam, either orally or by passing written material, or by showing material to another candidate, nor must you attempt to view another candidate’s work.
Failure to comply with the above will be regarded as cheating and will lead to disciplinary action as indicated in the Academic Quality Handbook (www.abdn.ac.uk/registry/quality/appendix7x1.pdf)
Section 4.14 and 5.
You may not start reading the questions or writing until instructed to do so by the Invigilator.
1/7
EG40JQ/12
Question 1:
a)
How do you define Risk? Explain the different risk assessment methods highlighting the relevant tools for each of these methods.
[8 marks]
b) The diameter of the dot produced by a printer is normally distributed with a mean diameter of
0.005 cm and a standard deviation of 0.001 cm.
i) What is the probability that the diameter of a dot exceeds 0.0065 cm?
[2 marks] ii) What is the probability that a diameter is between 0.0035 and 0.0065 cm?
[2 marks] iii) What standard deviation of diameters is needed so that the probability in part ( ii) is 0.995?
[3 marks]
c) A plastic casing for a magnetic disk is composed of two halves. The thickness of each half is