1. As part of a major plant renovation protect the industnal engineering department has been asked to balance a revised assembly operation to achieve an output of 240 units per eight-hour day. Task times and precedence relationship are as follows:
Do each of the follomng
b. Determine the minimum cycle time the maximum cycle time and the calculated cycle time (Round your answers to 1 decimal place.)
c. Determine the minimum number of stations needed (Round your answer to the next whole number.)
d. Assign tasks to workstations on the basis of greatest number of following tasks. Use longest processing time as a tiebreaker. If ties still exist, assume indifference in choice.
e. Compute the percentage of idle time for the assignment in part d. Use the actual bottleneck cycle time in your calculation. (Round your answer to 1 decimal place. Omit the "%" sign in your response.)
2. For the set of tasks given below do the following
b. Determine the minimum and maximum cycle times in seconds for a desired output of 500 units in a se. en-hour day /Round your answers to 1 decimal place.)
c. Determine the minimum number of mailistaticcs for output of 500 units per day (Round up your answer to the next whole number.)
d. Balance the line using the greatest positional v.sight heuristic. Break ties with the most foltowng tasks heuristic Use a cycle time of 50 seconds.
e. Calculate the percentage idle time for the line using the 50 second cycle time (Round your answer to 1 decimal place. Omit the -`14- sign in your response.)
3. A waker-machine operation was found to ineohe 3.3 minutes of machine time per cycle in the course of 40 cycles of stopwatch study The Aixker's ume averaged 2 8 minutes per cycle. and the Atrker was given a rating of 120 percent (mac hne rating is 100 percent) Midway through the study, the worker took a 10-nurxite rest freak Assuming an anowance facto( of 13 percent of A** time wench is appbed oft; to the worker element (not the machine element) determine the standard time tot this job (Do not round Intermediate calculations. Round your final answer to 2 decimal places.)