1、运营管理 考试题库krajewskiom9tif08Chapter8Lean SystemsTRUE/FALSE1.Lean systems are operating systems that maximize the value added of each of its activities by paring unnecessary resources and delays from them.1Answer: True2Reference: Introduction3Difficulty: Easy4Keywords: lean systems, value added2.While
2、lean systems work very well for manufacturing systems, they cannot be applied to service systems.1Answer: False2Reference: Introduction3Difficulty: Easy4Keywords: lean systems, manufacturing systems, service systems3.The just-in-time (JIT) philosophy is the belief that cutting inventory and removing
3、 non-value-added activities in operations can eliminate waste.1Answer: True2Reference: Continuous Improvement Using a Lean Systems Approach 3Difficulty: Easy4Keywords: JIT, just-in-time, value added, inventory, non-value-added4.Kaizen is the Japanese term for continuous improvement.1Answer: True2Ref
4、erence: Continuous Improvement Using a Lean Systems Approach3Difficulty: Easy4Keywords: kaizen, continuous improvement55.In a lean system, large inventories are not considered a type of waste, because they prevent operator wait times. 1Answer: False2Reference: Continuous Improvement Using a Lean Sys
5、tems Approach3Difficulty: Easy4Keywords: lean systems, inventory, types of waste6.In a lean system, wait times can be caused to some extent by long production runs. 1Answer: True2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Easy4Keywords: lean systems, wait times, type
6、s of waste7.Manufacturing an item before it is needed in a lean system is not considered waste, because it helps keep material flowing through the system. 1Answer: False2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Moderate4Keywords: lean systems, types of waste, overp
7、roduction8.In service systems, a common approach used to stress the system and identify problems is to reduce the number of employees doing an activity until the process begins to slow or come to a halt. 1Answer: True2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Modera
8、te4Keywords: lean systems, service systems, value added9.In manufacturing systems, one way to achieve continuous improvement can be to maintain low inventories, and periodically cut safety stocks almost to zero. 1Answer: True2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty
9、: Moderate4Keywords: lean systems, manufacturing systems, value added10.Just-in-time (JIT) systems need close relationships with suppliers.1Answer: True2Reference: Supply chain Considerations in Lean Systems3Difficulty: Moderate4Keywords: JIT, just-in-time, supplier relationship11.If infrequent, lar
10、ge shipments of purchased items are arranged with suppliers, large inventory savings for these items can be realized.1Answer: False2Reference: Supply chain Considerations in Lean Systems3Difficulty: Moderate4Keywords: shipments, inventory, savings, suppliers12.JIT II refers to a form of supplier par
11、tnership that places a supplier representative, who is empowered to plan and schedule the replenishment of materials from the supplier, in the customers plant on a full-time basis. 1Answer: True2Reference: Supply chain Considerations in Lean Systems3Difficulty: Moderate4Keywords: JIT II, supplier pa
12、rtnership, supplier in-plant representative13.The goal of single-digit setup is to have a setup completed in fewer than 10 hours.1Answer: False2Reference: Supply chain Considerations in Lean Systems3Difficulty: Moderate4Keywords: single-digit setup14.In lean systems, the need for single-digit setups
13、 is driven by the desire for small lot sizes.1Answer: True2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Moderate4Keywords: lean systems, small lot sizes, single-digit setup15.In a lean system, excess inventory hides problems on the shop floor, and thus prevents sources
14、 of waste from being identified and eliminated.Answer: TrueReference: Continuous Improvement Using a Lean Systems ApproachDifficulty: EasyKeywords: lean systems, types of waste, inventory16.While overproduction creates an item before it is needed, the extra time before an item is needed makes it eas
15、ier to detect defects and reduce their impact on a process.1Answer: False2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Moderate4Keywords: lean systems, types of waste, inventory, defects17.In lean systems, work-in-process inventory is a direct result of overproduction
16、and waiting.1Answer: True2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Moderate4Keywords: lean systems, types of waste, inventory, overproduction, waiting18.Using expensive, high precision equipment, even when simpler machines would suffice, is encouraged when lean sys
17、tems are implemented, because this is the only way high quality manufacturing can be achieved. 1Answer: False2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Easy4Keywords: lean systems, types of waste, inappropriate processing, defects19.Long production runs, poor materi
18、al flows, and processes that are not tightly linked to one another can cause over 90% of a products lead time to be spent waiting. 1Answer: True2Reference: Continuous Improvement Using a Lean Systems Approach3Difficulty: Moderate4Keywords: lean systems, types of waste, long production runs, material
19、 flow, overproduction, waiting20.The push method begins the production of items in advance of customer needs.1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Easy4Keywords: push production21.Push systems are often used in firms with highly repetitive processes and well defi
20、ned work flows of standardized items. 1Answer: False2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: push production, repetitive processes, defined work flows, standardized items22.The pull method begins the production of an item in advance of customer needs.1Answer:
21、False2Reference: Process Consideration in Lean Systems3Difficulty: Easy4Keywords: pull production23.Firms that have highly repetitive processes and well-defined work flows of standardized items often use the pull method.1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Moder
22、ate4Keywords: pull production, repetitive processes, defined work flows, standardized items24.Just-in-time (JIT) systems rely on inspectors to inspect quality into the product.1Answer: False2Reference: Process Consideration in Lean Systems3Difficulty: Easy4Keywords: JIT, just-in-time, quality25.Qual
23、ity at the source is a philosophy whereby defects are caught and corrected where they are created. 1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Easy4Keywords: lean systems, quality at the source 26.Automatically stopping the process when something is wrong and then fixi
24、ng the problems on the line itself as they occur is called heijunka. 1Answer: False2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: heijunka27.Automatically stopping the process when something is wrong and then fixing the problems on the line itself as they occur is c
25、alled jidoka. 1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: jidoka28.A power cord that can be plugged in only one way is an example of a poka-yoke.1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: JIT, just-i
26、n-time, quality, poka-yoke29.The Japanese practice of andon means that production does not begin until a card or bin is empty.1Answer: False2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: andon, card, bin30.Takt time is the cycle time needed to match the rate of prod
27、uction to the rate of sales. 1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: takt time31.Takt time is the cycle time needed to maximize utilization of an organizations workers and equipment. 1Answer: False2Reference: Process Consideration in Lean Systems
28、3Difficulty: Moderate4Keywords: takt time32.A firm that averages sales of 320 units for every 480-minute shift it runs has a takt time of 90 seconds. 1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: takt time33.A firm that averages sales of 320 units for
29、every 480-minute shift it runs has a takt time of 40 seconds. 1Answer: False2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: takt time34.Heijunka is the leveling of production load by both volume and product mix. 1Answer: True2Reference: Process Consideration in Lean
30、Systems3Difficulty: Moderate4Keywords: heijunka35.Mixed-model assembly is a type of assembly that produces a mix of models in smaller lots.1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: mixed model assembly, small lot size36.Productivity tends to increa
31、se when components are standardized because each worker performs a standardized task or work method more often each day. 1Answer: True2Reference: Process Consideration in Lean Systems3Difficulty: Moderate4Keywords: productivity, standardized components, standardized work method537.A five S program includes the activities of “simplify” and “system”.1Answer: False2Reference: Process Consideration in Lean Systems3Difficulty: Easy4Keywords: 5S, five S, JIT, just-in-time38.Five S practices can enable workers to visually see everything differently, prioritize tasks, and achieve a greater d
