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Exam 8: Facility and Work Design

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Question 31

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A product requires the following tasks to make it on an assembly line. Assume 7.6 hours per workday and 5 workdays per week. $\begin{array}{ccc} \underline{\text { Task} } & \underline{ \text { Time in seconds)} } & \underline{ \text { Predecessors } }\\\text { A } & 10 & \text { none } \\\text { B } & 14 & \text { A } \\\text { C } & 12 & \text { none } \\\text { D } & 8 & \text { none } \\\text { E } & 11 & \text { C } \\\text { F } & 17 & \text { C, D } \\\text { G } & 20 & \text { B } \\\text { H } & 9 & \text { E } \\\text { I } & 13 & \text { D } \\\text { J } & 15 & \mathrm{G}, \mathrm{H} \\\text { K } & 17 & \text { H, I } \\\text { L } & 8 & \text { J } \\\text { M } & 10 & \text { M } \\\text { N } & 15 & \text { K, L, M }\end{array}$ a.Using only the information given, what would be the maximum output per day that can be achieved? b.Assume that the activities have been assigned to five workstations. What is the line efficiency for a cycle time of 40 seconds?

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a.The minimum cycle time is the maximum ...

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Question 32

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Teams are a way of accomplishing job enrichment.

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Question 33

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Because of precedence relationships, assembly-line efficiencies will generally be very high.

Which type of layout is best for high volumes of demand with few if any setups/changeovers?

Describe approaches used for process layout design.

Product layouts are less flexible than process layouts.

A ____ layout is an arrangement based on self-contained groups of equipment needed to produce a particular set of goods or services.

Ergonomics is the science that is concerned with determining specific job tasks and responsibilities.

Discuss four reasons for conducting a facility-layout study.

The facility layout in a library would most likely be a process layout.

Which of the following is not a disadvantage of virtual teams?

Cycle time in assembly line balancing is the maximum amount of time it takes to process a part at some workstation along the line.

An assembly line with 28 activities is to be balanced. The total amount of time required for all 28 activities is 39 minutes. The line will operate for 450 minutes per day. What must the cycle time be to achieve an output rate of 400 units/day?

List the many questions that must be addressed in designing a workstation.

Virtual teams are empowered work teams that assume many traditional management responsibilities.

Explain the socio-technical approach to job design and some ways to implement it.

All of the following are true regarding assembly lines except

In a product layout such as an assembly line, a flow blocking delay occurs whenever one stage completes work and no units from the previous stage are waiting processing.

A ____ layout is an arrangement based on the sequence of operations that are performed during the manufacturing of a good or the delivery of a service.

Consider the following assembly line information for manufacturing the latest cell phone. $\begin{array} { c c c } \underline{\text { Task }} & \underline{ \text { The in minutes)} } & \underline{ \text { Predecessars} } \\\text { A } & 0.5 & \text { none } \\\text { B } & 0.4 & \text { A } \\\text { C } & 0.6 & \text { A } \\\text { D } & 0.2 & \text { B, C } \\\text { E } & 0.3 & \text { B } \\\text { F } & 0.7 & \text { E, D } \\\text { G } & 0.4 & \text { F, C }\end{array}$ The firm wants to produce 80 cell phones per hour. a.What is the required cycle time? b.Balance the assembly line using your choice of balancing heuristic, with the goal of minimizing the number of workstations needed? Specify the tasks) assigned to each workstation.) c.What is the efficiency of your assembly line? d.Is this a good assembly line balancing solution? Explain. What do you recommend?