(B) You are doing a time study on a manual visual inspection soldering operation
ID: 1130962 • Letter: #
Question
(B) You are doing a time study on a manual visual inspection soldering operation for printed circuit board assemblies (PCA's) at an electronics factory in China. The performance rating of the worker observed and the fatigue factor of the work are also shown. Calculate the average times, normal times, and standard times of each operation, and the sum of these times in the table below. Performance Average Standard Job Element 4 Rating Time Normal Time Time Place PCA under microscope 2 4 3 Look for missing components Look for solder defects Decide if PCA is good or bad 6 10 3 110% 105% 110% 115% 12 13 26 TotalExplanation / Answer
Allowance factor considered here to be 10% to calculate standard time
standard time= normal time(Allocation factor+1)
Job Element Observation in minutes Performance rating Average Time Normal Time Standard Time 1 2 3 4 Place PCA under microscope 2 4 3 1 110% 2.5 2.75 3.025 Look for missing components 6 7 8 4 105% 6.25 6.5625 7.21875 Look for solder defects 10 12 13 8 110% 10.75 11.825 13.0075 Decide if PCA is good or bad 3 2 6 4 115% 3.75 4.3125 4.74375 Total Time 21 25 30 17 23.25 25.45 27.995Related Questions
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