Question 1151 Determine the maximum load that can be raised by an outstretched arm of a 50 percentile female. [5] [5] Question 2 151 The following are data on a control response set up. Based on this data, determine the optimum CR ratio for the set up. CR Ratio Travel Time (s) Adjust Time (3) 1 0,1 5 5 10 0,5 10 0,1 2 1 5 20 Question 3 121 In ABC company, a worker recorded the following noise sources: 1.5 hours, 100dBA; 4 hours, 92 dBA, 1 hour, 102 dBA; 3 hours, less than 80 dBA. Is the company in compliance? Justify your answer. Determine the TWA noise level. [9] Question 4 171 A new method is being evaluated. It is estimated to save R35 000 in the first year, have a loss of R7 000 the second year, save R56 000 the third year and R21 000 the fourth year. If the company expects a 20% return on investment, how much capital can be invested in this method? [7] Question 51141 5.1 What would the lead of a 2-inch diameter drill with an included angle of 118 be? (6) 5.2 If this drill is running at a surface speed of 120 feet per minute and a feed of 0.015 inch per revolution, what would the feed be in inches per minute? (4) 5.3 How long would it take this drill to do (drill through) a casting of 3 inches thick? (4) [14] Question 631 6.1 Determine in TMUs: 0.0064 hours per piece 0.469 minutes per piece (1) 6.2 (2) [3] 7.1 Question 7 [12] Data from an 8 hour work sampling study shows 100 observations, out of which a machine was found running 54 times; Idle: Broken - 10 times, Out of stock - 22 times, Other - 14 times. Determine the percentage of time the machine is running. (3) Determine the percentage of time the machine is broken. (3) 7.3 Determine the limit of accuracy for this study. Determine the 95% confidence interval of the machine running. (2) [12] 7.2 7.4 Question 8 121 If a daywork shop was paying an average of R100 per hour and had 250 direct labour employees working, what would be the true direct labour cost per hour if during a normal month 40 000 hours of work were produced? Assume 173 working hours/month/employee. [91 Question 9 [161 Analysts established a standard time of 0.0225 hours/piece for machining a small component. A setup time of 0.25 hour is established also, as the operator performs the necessary setup work on 100% participation incentive with a R115 guaranteed base rate. Compute: 9.1 Total time allowed to complete an order of 430 pieces. (4) 9.2 Operator efficiency, if job is completed in a 7-hour day, and the total earnings for job. (6) 9.3 Efficiency of operator who requires 10 hours to complete, and the total earnings for job. (6) [16] Page 6 of 8