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Exam 8: Facility and Work Design

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Question 41

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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?

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CT = A/R =...

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Question 42

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A small electronics company assembles power supplies for use in computers, printers and Fax machines. They want to set up an assembly line to make their operation more efficient and plan to use line balancing with the longest-task-time heuristic. The demand for power supplies is 70 per hour, and the productive time per hour is 52 minutes. The following table provides details on their operation. a.What is the cycle time? b.What is the theoretical minimum number of workstations? c.What tasks go into the first workstation? d.How many workstations are needed for the entire line? e.What is the assembly-line efficiency?

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a.Cycle time = 54 min per hr./80 units p...

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Question 43

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Assembly line balancing

CRAFT is a process layout technique that tries to improve on a current solution by exchanging two or three departments at a time to determine if total materials handling costs have been reduced.

Flow-blocking and lack-of-work delays can be reduced by assigning an appropriate level of capacity at each workstation.

The objective of assembly line balancing is to group tasks among workstations so that the amount of work assigned to each workstation is highly variable, thus maximizing flexibility.

A Gallup study showed that workers who are allowed to personalize their workplaces were no more productive than those who are not allowed.

The Florida Appliance Company is installing an assembly line to produce vacuum cleaners, and you, as an operations manager, are responsible for balancing the line. The tasks to be performed are listed, along with their times and immediate predecessors. The company is planning to operate 2 shifts per day, 8 hours per shift. The desired output rate of the line is 480 units per day. a.Compute the cycle time per unit in minutes. b.Compute the minimum number of workstations required. c.Use the longest-task-time heuristic to balance the assembly line. d.Compute the efficiency of your assembly line.

Product layouts offer higher flexibility with low productivity and process layouts have limited flexibility with high productivity.

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

Assembly line balancing problems involving many distinct products (mixed-model line balancing) are generally easier to solve than single-model balancing problems because there are more alternatives available to assign tasks to workstations.

Which of the following is not a common reason for facility layout studies?

What is the output rate if the cycle time is set at 2.2 minutes?

For a given cycle time in line balancing, assembly-line efficiency can be increased by

Which is not true regarding fixed-position layout?

Product layouts are less flexible than process layouts.

The determination of specific job tasks and responsibilities is called ____.

In a product layout, a breakdown of one piece of equipment will not cause the entire process to shut down.

Cycle time is related to the output rate and the available time to produce output.