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Exam 9: Layout Strategies

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Question 1

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The layout approach that addresses trade-offs between space and material handling is called the fixed-position layout.

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Question 2

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An assembly line with 11 tasks is to be balanced.The longest task is 2.4 minutes,the shortest task is 0.4 minutes,and the sum of the task times is 18 minutes.The line will operate for 600 minutes per day. (a)Determine the minimum and maximum cycle times. (b)What range of output is theoretically possible for the line? (c)What is the minimum number of stations needed if the maximum output rate is to be sought? (d)What cycle time will provide an output rate of 200 units per day?

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(a)Minimum cycle time is 2.4 minutes.Max...

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If the schedule calls for the production of 120 units per day and 480 minutes of production time are available per day,the cycle time would be 4 minutes.

One guideline for a retail layout is to locate high-draw items around the periphery of the store.

A process-oriented layout is the traditional way to support a product differentiation strategy.

The ________ uses non-numeric "closeness" ratings to determine which departments should be located near one another and which departments should be kept farther apart.

Explain what the purpose of assembly-line balancing is.Describe briefly how it is done.

In assembly-line balancing,the theoretical minimum number of workstations is:

Hemo-tech,Inc. ,a biomedical technology and research laboratory,produces a standard blood filtering device on an assembly-line basis.Six basic tasks are performed along the assembly line.The time to perform each task and the tasks that must immediately precede each task are in the table below.Twenty pumps per 450-minute day must be produced by the assembly line. (a)Draw the network diagram of the precedence relationships. (b)Identify the absolute minimum and maximum cycle times. (c)What is the cycle time required to meet demand? (d)What is the minimum number of workstations required to meet the schedule? (e)Balance this line using the most following tasks heuristic. (f)What is the efficiency of the line obtained in part (e)? (g)Can the efficiency of this solution be improved? Explain.

Which one of the following is NOT common to repetitive and product-oriented layouts?

For which of the following operations would a fixed-position layout be MOST appropriate?

Deloitte & Touche solved the empty desk problem by:

What is cross-docking? What are some of its benefits for manufacturing facilities,distribution centers,and retailers such as Walmart?

If a layout problem is solved by use of heuristics,this means that:

A(n)________ addresses flow,allocates space,and responds to customer behavior.

A(n)________ is a special product-oriented arrangement of machines and personnel in what is ordinarily a process-oriented facility.

An assembly line has been designed to make battery-powered beverage mixers.Task details are shown in the table below: a.What is the assigned cycle time (in minutes)? b.What is the maximum output rate of this line in mixers per hour? c.What is the total idle time per cycle? d.What is the assembly line's efficiency?

There are three work centers (A,B,and C)behind the financial aid counter at a nearby university.They can each fit into any of three office spaces (1,2,and 3)off the corridor behind the desk.There is no student contact in these areas,only workers.The distance 1-2 is 20 feet,2-3 is 30 feet,and 1-3 is 50 feet.The matrix of work (trips per day)at the three centers are shown in the following table.Remember that each trip must be a round-trip (from 1 to 2 and back,for example). (a)How many possible assignments are there? List them. (b)Calculate the total distance traveled in each of these assignments. (c)Which assignment minimizes distance traveled?

The main goal of retail layout is:

An electronics manufacturer makes remote control devices for interactive-cable-TV systems.The following assembly tasks must be performed on each device. a.Draw the precedence diagram for this problem. b.What is the sum of the task times? c.What cycle time will allow the production of 200 units over a ten-hour day? d.What is the theoretical number of workstations needed? e.Balance this assembly line using the heuristic most following tasks and the heuristic longest operation time. f.How do these two solutions differ? Which do you prefer;why?