Consider a four-step serial process with processing times given in the following list. There is onemachine at each step of the process, and this is a machine-paced process.Step 1: 16 minutes per unitStep 2: 15 minutes per unitStep 3: 22 minutes per unitStep 4: 12 minutes per unitAssuming that the process starts out empty, how long will it take (in hours) to complete a batch of 98units?

Capacity: The maximum number of flow units that can flow through that resource per unit of time.…

Answered: Consider a four-step serial process…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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. Consider the following three-step assembly operation with quality problems. Allresources are staffed by one employee.• The first resource has a processing time of 7 minutes per unit.• The second resource has a processing time of 6 minutes per unit.• The third resource has a processing time of 5 minutes per unit. With a 40 percentprobability, the flow unit coming out of the third resource has to be reworked. In thatcase, the operations at the second and third resources are repeated. You can assumethat (a) rework always succeeds (i.e., a unit going through the rework loop willalways work after the third resource) and (b) the processing times for units in reworkare the same as for regular units.Where in the process is the bottleneck? What is the capacity of the process?
. Consider the following four-step assembly operation with quality problems. Allresources are staffed by one employee.• The first resource has a processing time of 5 minutes per unit.• The second resource has a processing time of 6 minutes per unit.• The third resource has a processing time of 3 minutes per unit. With a 30 percent probability, the flow unit coming out of the third resource has to be reworked. In that case,the operations at the first, second, and third resources are repeated. You can assumethat (a) rework always succeeds (i.e., a unit going through the rework loop will alwayswork after the third resource) and (b) the processing times for units in rework are thesame as for regular units.• The fourth resource has a processing time of 4 minutes per unit.a. Where in the process is the bottleneck?b. What is the capacity of the process?
3-Step Process with Rework Consider the following three-step assembly operation with quality problems. All resources are staffed by one employee. The first resource has a processing time of 7 minutes per unit. The second resource has a processing time of 6 minutes per unit. The third resource has a processing time of 5 minutes per unit. With a 40% probability, the flow unit coming out of the third resource has to be reworked. In that case, the operations at the second and third resources are repeated. You can assume that (a) rework always succeeds (i.e. a unit going through the rework loop will always work after the third resource),and (b) the processing times for units in rework are the same as for regular units. A) For every unit of demand, how many units have to flow through the second step in the process? B) Where in the process is the bottleneck? Step 1, 2 or 3?
Consider the following two production processes making an electronic component for a navigation system. Both processes consist of 20 stations and operate at a cycletime of 1 minute/unit. Their most error-prone operation is step 9:• Process 1 has a final inspection at the end of the process and has about 300 units of inventory between step 9 and the inspection.• Process 2 has each worker check the work of the previous steps and about 50 units ofinventory between step 9 and the end of the process, roughly equally distributed across theremainder of the process.What would be the information turnaround time for a defect made at station 9?
Balancing a process with a fixed sequence of activities will achieve a higher average labor utilization than balancing a process with no fixed sequence of activities. True or False?
. Consider a four-step serial process with the number of workers at each step and processing times given in the following table.Assuming that the process starts out empty and is worker-paced, how long will it take (in minutes) to serve 20 customers?
Smartphones are made on a 40-step assembly process. All 40 steps are connectedthrough a conveyor belt and all of the 40 steps must work at the same rate even if someof them have more capacity than others. Is this process a machine-paced process or aworker-paced process?a. Machine-pacedb. Worker-paced
A serial process has 5 steps – A (4), B(5), C(2), D(6), and E(3) – that have to be performed in this order. The numbers in parentheses are the times (in minutes) needed to process a unit. For each unit produced by this process, the process has a total idle time of: Group of answer choices 1 min 10 mins 6 mins 3 mins
A process of making chair is described as follows: Stage 1 Seat and back attached Stage 2 Legs attached The production speeds are 15 chairs per hour for Stage 1 and 30 chairs per hour for stage 2. The cycle time of the process is ______minutes. The flow time of the process is ______ minutes.
onsider a process consisting of three resources. Assume there exists unlimited demand for the product, and that all activities are always performed in the following sequence. Resource 1 has a processing time of 6 minutes per unit. Resource 2 has a processing time of 3 minutes per unit. Resource 3 has a processing time of 5 minutes per unit. All three resources are staffed by one worker and each worker gets paid $14 per hour. How much idle time does the worker at resource 3 have per unit?
Consider a process consisting of three resources. Assume there exists unlimited demand for the product, and that all activities are always performed in the following sequence. Resource 1 has a processing time of 6 minutes per unit. Resource 2 has a processing time of 3 minutes per unit. Resource 3 has a processing time of 5 minutes per unit. All three resources are staffed by one worker and each worker gets paid $14 per hour. What is the cost of direct labor?
Consider a production line with five stations in serial. The stations have the following process times in minutes (or minutes/unit). Station 1's process time is 9 minutes/unit. Station 2's process time is 10 minutes/unit. Station three has two identical machines, each of which process a unit in 12 minutes (each unit only needs to be processed on one of the two machines). Station 4's process time is 5 minutes/unit. Station 5's process time is 8 minutes/unit. Which station is the bottleneck station? a) Station 3 b) None of the other options c) Station 2 d) Station 5

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