ISQS Chapter 8 Questions
All of the following are common objectives of layout studies EXCEPT to: a. minimize delays in materials handling and customer movement. b. minimize the number of workstations. c. maintain flexibility. d. provide for good housekeeping and maintenance.
b. minimize the number of workstations.
. A _____ layout is an arrangement based on the sequence of operations that are performed during the manufacturing of a good or delivery of a service. a. product b. process c. fixed-position d. cellular
A _____ layout consists of a functional grouping of equipment or activities that do similar work. a. fixed-position b. product c. process d. cellular
A _____ layout is an arrangement based on self-contained groups of equipment needed to produce a particular set of goods or services. a. Cellular b. Process c. fixed-position d. Product
The typical layout of facilities in a pizza restaurant would be an example of a _____ layout. a. Cellular b. Process c. fixed-position d. Product
The production of large goods such as airplanes is best accomplished using a _____ layout. a. fixed-position b. Product c. Process d. Cellular
Identify an advantage of product layouts. a. Higher job satisfaction b. Lower work-in-process inventories c. Easy to add new products d. Highly flexible
b. Lower work-in-process inventories
Which of the following statements is NOT true about fixed-position layouts? a. Work-in-process remains stationary. b. The volume of demand is very high. c. They require a high level of planning and control. d. They are used in the production of heavy machine tools and locomotives.
b. The volume of demand is very high.
Which of the following statements is NOT true about cellular layout? a. It facilitates the processing of families of parts with similar processing requirements. b. Workers concentrate more on moving parts of the machines rather than on production. c. It makes additional floor space available for productive uses. d. Workflow is standardized and centrally located.
b. Workers concentrate more on moving parts of the machines rather than on production.
All of the following are limitations of process layouts EXCEPT: a. high material handling costs. b. more complicated planning and control systems. c. diverse range of products. d. low equipment utilization.
c. diverse range of products
_____ layout is used for high volumes of demand and setup requirements. a. Fixed-position b. Cellular c. Product d. Process
_____ classifies parts into families so that cellular layouts can be effectively used. a. Flow-blocking delay b. Group technology c. Ergonomics d. Job enlargement
b. Group Technology
Which of the following is NOT a common reason for facility layout studies? a. A new material supplier is used. b. A new good or service is introduced to the customer benefit package. c. There is significant change in demand or throughput volume. d. Different process, equipment and/or technology are installed.
a. A new material supplier is used
The typical layout of facilities in a legal office would be an example of a _____ layout. a. Cellular b. fixed-position c. Product d. Process
Steve, an operations manager at Krypto InfoTech, must set up an assembly line to assemble a computer mouse. The precedent network given below is defined with task times in parentheses and stated in minutes. There are 480 minutes of assembly time per shift and there is one shift. The forecast (output rate) is 60 units per shift. He decides to use the longest/largest-task-time rule to assign tasks to workstations. What is the cycle time? a. 7 minutes/unit b. 6 minutes/unit c. 8 minutes/unit d. 9 minutes/unit
c. 8 minutes/unit
The task assigned to the third workstation (called C) using the longest/largest-task-rule is _____. a. task 6 b. task 4 c. task 5 d. task 3
c. task 5
_____ occurs whenever one stage completes work and no units from the previous stage are awaiting processing. a. Lack-of-work delay b. Buffer delay c. Propagation delay d. Flow-blocking delay
a. Lack-of-work delay
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? a. 1.39 minutes b. 1.125 minutes c. 11.54 minutes d. 0.89 minutes
b. 1.125 minutes
An assembly line with 28 operations is to be balanced. The total amount of time required for all 28 operations is 39 minutes. The longest operation takes 2.2 minutes and the shortest takes 0.8 minutes. The line will operate for 450 minutes per day. 1. Determine the minimum and maximum cycle time. 2. What is the output rate if the cycle time is set at 2.2 minutes? a. min cycle time = 0.8; max cycle time = 2.2; output rate = 562.5 .5 b. min cycle time = 0.8; max cycle time = 39; output rate = 204.5 c. min cycle time = 2.2; max cycle time = 39; output rate = 204.5 d. min cycle time = 2.2; max cycle time = 31.2; output rate = 562.5
b. min cycle time = 0.8; max cycle time = 39; output rate = 204.5
Use the information in Table 1. The company is planning to operate 2 shifts per day, 8 hours per shift. If the desired output rate of the line is 480 units per day, what is the cycle time? a. 60 seconds b. 120 seconds c. 180 seconds d. 240 seconds
b. 120 seconds
Use the information in Table 1. Total idle time is _____ seconds using the longest-task-time rule. a. 10 b. 25 c. 30 d. 15
Use the information in Table 1. What is the efficiency using the longest-task-time rule? a. Less than 85% b. More than 93% but less than 95% c. More than 85% but less than 91% d. More than 91% but less than 93%
b. More than 93% but less than 95%
Consider the following assembly line information for manufacturing the latest cell phone in Table 2. The firm wants to produce 80 cell phones per hour. Table 2 Task Time (in minutes) Predecessors A 0.5 none B 0.4 A C 0.6 A D 0.2 B, C E 0.3 B F 0.7 E, D G 0.4 F, C The cycle time is _____ seconds. a. 60 b. 100 c. 45 d. 75
Consider the following assembly line information for manufacturing the latest cell phone in Table 2. The firm wants to produce 80 cell phones per hour. Table 2 Task Time (in minutes) Predecessors A 0.5 None B 0.4 A C 0.6 A D 0.2 B, C E 0.3 B F 0.7 E, D G 0.4 F, C Using the longest-task-time rule, the efficiency of an assembly-line balance is _____. a. more than 85% but less than 95% b. more than 75% but less than 85% c. Less than 65% d. more than 65% but less than 75%
b. more than 75% but less than 85%