OPMT 303 CH 6 Concepts – Flashcards
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A product-focused, single-piece flow, pull production system would be called a:
continuous flow.
assembly line.
cellular layout.
job shop.
nonrepetitive process.
answer
cellular layout
( These are characteristics of cellular layouts. )
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Which of the following is not a process commonly considered in making products or delivering services?
subcontracting
batch
repetitive
job shop
continuous
answer
subcontracting
( Subcontracting isn't a process type. )
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As a general rule, continuous processing systems produce products for inventory rather than for customer order.
True
False
answer
True
( Continuous processing systems tend to be used in make-to-stock scenarios. )
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As compared to rigid automation, the benefits of flexible manufacturing systems include:
reduced labor requirements.
significantly lower fixed costs.
significantly lower variable costs.
larger batch sizes.
higher efficiency.
answer
significantly lower fixed costs.
( Reduced labor costs and consistent quality and quick changeover time provide lower unit costs. )
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If a line is balanced with 80 percent efficiency, the "balance delay" will be:
20 percent.
80 percent.
depends on the next operation.
unknown, since balance delay is not related to efficiency.
100 percent.
answer
20 percent
( Efficiency equals 100 percent minus balance delay. )
question
In an environment in which demand is both substantial and stable, __________ technology tends to be the best choice.
flexible automation
fixed automation
project production
programmable automation
batch production
answer
fixed automation
( Fixed automation is the least flexible, but low cost and high volume are its primary advantages. )
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A process layout is more susceptible to shutdowns caused by equipment breakdowns than a product layout.
True
False
answer
False
( A product layout is more susceptible to these. )
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Product layouts involve high utilization of labor and equipment.
True
False
answer
True
( They're used in high volume, standardized operations. )
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Morale problems can be a reason for redesign of a facility layout.
True
False
answer
True
( A layout redesign can lead to improved morale. )
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The substitution of machinery that has sensing and control devices for human labor is best described by the term:
computer-integrated manufacturing.
automation.
flexible manufacturing system.
feedback control.
computer-aided manufacturing.
answer
automation
( Automation involves the substitution of machinery that has sensing and control devices for human labor. )
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A cafeteria line would be an example of a process-focused layout.
True
False
answer
False
( This would be an example of a product-focused layout. )
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A production line is to be designed for a job with three tasks. The task times are .4 minutes, 1.2 minutes, and .5 minutes. The maximum cycle time in minutes is:
1.4.
2.1.
.7.
.8.
.3.
answer
2.1.
( This assumes only one workstation. )
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The estimation of costs is generally most difficult when the ___________ process has been chosen.
project
repetitive
job shop
batch
continuous
answer
job shop
( Cost estimation is very difficult in job shops. )
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The term "computer-aided manufacturing" refers primarily to the use of robotics in process control.
True
False
answer
False
( CAM involves using computer technology to control various facets of the manufacturing process. )
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Job shops tend to be __________ while continuous processes tend to be __________.
short-term and capital intensive; long-term and labor intensive
low cost-per-unit; high cost-per-unit
small scale and flexible; large-scale and inflexible
in services; in manufacturing
standardized; customized
answer
small scale and flexible; large-scale and inflexible
( Job shops tend to be much smaller and more flexible than continuous processes. )
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Daily capacity of a product layout is determined by:
operating time divided by total task time.
cycle time divided by operating time.
operating time divided by cycle time.
cycle time divided by total task time.
total task time divided by cycle time.
answer
operating time divided by cycle time.
( This represents how many units are possible per day. )
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The minimum possible cycle time in a product layout is determined by the:
per-unit setup time.
longest task time.
total task time.
shortest task time.
average task time.
answer
longest task time.
( The longest task time represents the minimum cycle time. )
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Service layouts must be visually pleasing as well as functional.
True
False
answer
True
( The service layout is often perceived by the customer. )
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Cellular layout is a term associated with:
functional (or process) layouts.
wireless telecommunication.
assembly lines.
part families.
job shops.
answer
part families.
( Part families are produced on cells. )
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Right-sized equipment tends to be larger than equipment used in traditional process layouts.
True
False
answer
False
( Right-sizing can lead to smaller equipment. )
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Repetitive processing systems usually produce goods specifically for customer orders rather than for inventory.
True
False
answer
False
( Repetitive processing systems usually produce goods for inventory. )
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Which phrase most closely describes flexible manufacturing systems?
a more fully automated version of cellular manufacturing
a variation of CAD
a process layout with a manufacturing overlay
manufacturing resource planning
an approach that allows workers to begin work at a time of their choosing
answer
a more fully automated version of cellular manufacturing
( Flexible automation allows for greater variety within or across product families. )
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Intermittent processing can take the form of batch processing or a job shop.
True
False
answer
True
( A job shop is a batch processer with a standard batch size of one. )
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In which type of operation are you likely to see, at most, only minor variations in the product or service being produced using the same process and the same equipment?
a job shop
intermittent production
a project
batch processing
repetitive production
answer
repetitive production
( In continuous production there is no variation in the product or service being produced. )
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A disadvantage of a product layout can be high in-process inventory costs.
True
False
answer
False
( In-process inventory is low with a product layout. )