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Exam 6: Process Selection and Facility Layout

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Question 41

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A manufacturing cell allows the production of a wide range of very different products.

A) True
B) False

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Question 42

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Given the following line balance data: $\begin{array} { l c c } \text { Task } & \text { Predecessor } & \text { Time (seconds) } \\\hline \mathrm { t } & \text { none } & 15 \\\mathrm { u } & \mathrm { t } & 14 \\\mathrm { v } & \mathrm { t } & 7 \\\mathrm { w } & \mathrm { u } & 6 \\\mathrm { x } & \mathrm { v } & 8 \\\mathrm { y } & \mathrm { w } , \mathrm { x } & 10 \\\mathrm { z } & \mathrm { y } & 21\end{array}$ What is the appropriate cycle time for eight hours of operating time per day and a desired output rate of 960 units per day?

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Question 43

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What is it about repetitive processes that make them appropriate for products in the maturity phase of their life cycle?

Process layouts feature departments or other functional groupings of personnel or equipment.

The term "computer-aided manufacturing" refers primarily to the use of robotics in process control.

Management wants to design an assembly line that will turn out 800 videotapes per day. There will be eight working hours in each day. The industrial engineering staff has assembled the information below: $\begin{array} { l c l } \text { Task } & \text { Time (min) } & \text { Immediate Predecessor } \\\hline \mathrm { a } & .2 & \text { none } \\\mathrm { b } & .2 & \text { a } \\\mathrm { c } & .4 & \text { none } \\\mathrm { d } & .1 & \text { none } \\\mathrm { e } & .3 & \mathrm { c } , \mathrm { d } \\\mathrm { f } & .2 & \mathrm {~b} , \mathrm { e } \\\mathrm { g } & .1 & \text { none } \\\mathrm { h } & .2 & \mathrm { f } , \mathrm { g } \\\mathrm { I } & .6 & \mathrm {~h}\end{array}$ A) Determine the maximum and minimum cycle times. B) Determine the optimum cycle time. C) What is the minimum number of stations needed? D) Draw the precedence diagram. E) Assign tasks to stations in order of most following tasks first.

Continuous production has been a significant factor underpinning the U.S. standard of living over the last century.

Which one of the following is not considered an important factor in service layout design?

Information technology refers to competitive data.

A company needs to locate three departments (X, Y, and Z) in the three areas (I, II, and III) of a new facility. They want to minimize interdepartmental transportation costs, which are expected to be $.50 per load meter moved. An analyst has prepared the following flow and distance matrices: $\begin{array}{l}\text { Distances (meters) } \quad\quad\quad\quad\quad\quad \text { Flows (loads per week }\\\begin{array}{rlll}\text { From/To } & \text { I } & \text { II } & \text { III } \\\hline \text { I } & - & 10 & 20 \\\text { II } & & - & 10 \\\text { III } & & & -\end{array}\quad\quad\begin{array}{rlll}\text { From/To } & \mathrm{X} & \mathrm{Y} & \mathrm{Z} \\\hline \mathrm{X} & - & 0 & 80 \\\mathrm{Y} & 30 & - & 150 \\\mathrm{Z} & 100 & 130 & -\end{array}\end{array}$ If the company were to locate departments X, Y, and Z in areas 1, 2, and 3, respectively, what would be the total distance (in meters) loads would be moved each week?

Group technology is closely connected to cellular manufacturing.

Among the benefits claimed for cellular manufacturing are less material handling and reduced setup time.

Given the following line balance data: $\begin{array} { l c c } \text { Task } & \text { Predecessor } & \text { Time (seconds) } \\\hline \mathrm { t } & \text { none } & 15 \\\mathrm { u } & \mathrm { t } & 14 \\\mathrm { v } & \mathrm { t } & 7 \\\mathrm { w } & \mathrm { u } & 6 \\\mathrm { x } & \mathrm { v } & 8 \\\mathrm { y } & \mathrm { w } , \mathrm { x } & 10 \\\mathrm { z } & \mathrm { y } & 21\end{array}$ For eight hours of operating time per day and a desired output rate of 960 units per day, what balance (if any) will yield the minimum number of stations?

Which closeness rating reflects the highest importance for two departments being close to each other?

The type of layout which features departments or other functional groupings in which similar activities are performed is:

Flexible manufacturing systems bring the benefits of automation to continuous processes.

For a production line, daily capacity can be determined by dividing the daily operating time by the line's cycle time.

A product-focused, single-piece flow, pull production system would be called a:

Given the following data: $\begin{array} { l l } \text { Station } & \begin{array} { l } \text { Station } \\\text { time } ( \text { min } )\end{array} \\\hline1 & 4.2 \\2 & 4.7 &\text { Cycle time }=5.1 \text { minutes }\\3 & 4.4 \\4 & 4.8\end{array}$ Determine the percentage idle time.

Given the following line balance data: $\begin{array} { l c c } \text { Task } & \text { Predecessor } & \text { Time (seconds) } \\\hline \mathrm { t } & \text { none } & 15 \\\mathrm { u } & \mathrm { t } & 14 \\\mathrm { v } & \mathrm { t } & 7 \\\mathrm { w } & \mathrm { u } & 6 \\\mathrm { x } & \mathrm { v } & 8 \\\mathrm { y } & \mathrm { w } , \mathrm { x } & 10 \\\mathrm { z } & \mathrm { y } & 21\end{array}$ For eight hours of operating time per day and a desired output rate of 960 units per day, what is the percentage of idle time for the balance which uses the minimum number of stations?