Final 2008 - University of British Columbia Faculty of...

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University of British Columbia Faculty of Applied Science Department of Mining Engineering MINE 482: Maintenance Engineering Final Examination April 25, 2008 Instructor: Robert Hall Instructions: This examination is THREE HOURS in length. This is a closed book examination: you are allowed 2 8.5x11 formula sheets. Please answer all questions in the answer booklets provided. Put your name and student number on the front of all answer booklets. Each question is out of 20, marks for various portions of the question are given in ( ). You are required to do 5 out of the 6 questions . Note that if you do more than 5 only the first 5 will be marked. Show all calculations. Be sure to put your name and student number on any extra pieces of paper that you use and hand in. If the instructor is unavailable in the examination room and if doubt exists as to the interpretation of any question, the candidate is urged to submit with the answer paper a clear statement of any assumptions made.
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Question One Table 1 shows the average downtime in hours and average tons per hour for conveyors used to transfer material around the mine to the plant. The data is taken from several mines operating similar conveyors. a. Is there a relationship between conveyor downtime and average tons? (12) b. What Confidence level do you have? (3) c. Discuss any reservations you might have about the data (5) Table1 Conveyor Downtime and Average Tons Conveyor Downtime Average Tons per hour (1000) 11.1 10.9 10.3 14.2 12 13.8 15 21.5 13.7 13.2 18.5 21.1 17.3
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This note was uploaded on 03/28/2012 for the course CIVL 210 taught by Professor Soroush during the Spring '12 term at The University of British Columbia.

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Final 2008 - University of British Columbia Faculty of...

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