OPMA CHAPTER 6
Inventory turn
Cost of goods sold / average inventory
Rank the production process layouts from lowest-to highest-volume
Project Workcenter Manufacturing cell Assembly line
Identify the layout format that is utilized when the product being manufactured remains in a fixed location
Project layout
In which production system does the product remain in one place while resources (such as workers or equipment) travel to the product when needed?
Project layout
The _______ relationship describes the order in which tasks must be completed
precedence
Lead time is the time needed to respond to a customer ______
order
Sort the steps associated with making a product into their order (from first to last)
sourcing, making, delivering
Identify the true statements about assembly-line and continuous process layouts
- In a continuous process, a product moves continuously through the process - Often, the item being produced in a continuous process is a liquid or chemical that actually flows through the system - In an assembly line, a product goes through a progressive set of steps
There are _____ dimensions depicted on a product-process matrix
2
Last year a firm had an average inventory of $1,500,000 and the costs of goods sold was $3,750,000. what was the inventory turn last year?
2.5
Last year a firm had an average inventory of $1,500,000 and the costs of goods sold was $3,750,000. what was the days-of-supply last year?
365/2.5 = 146
Which of the following is NOT true about a workcenter layout?
A workcenter layout is commonly used for systems with high production volumes.
Which of the following products would use a project layout?
Bridge
The point in the supply chain where inventory is positioned to allow the preceding processes to operate independently is the
Customer order decoupling point
A ________ line layout can increase opportunities for work sharing among workstations in a assembly line
Flexible
Which of the following is not one of the five basic work structures?
Flow line
The long-term relationship between inventory, throughput, and flow of time is described by ______ law.
Little's
The issue of balancing the level of finished inventory against the level of service to the customer occurs in which firm
Make-to-stock
Which type of firm invests in lean manufacturing programs in order to improve customer service levels for a given inventory investment
Make-to-stock
In a project layout, _____ and _____ are arranged around the production point
Materials; equipments
Total number of combinations =
N1 x N2 x N3 x N4
In a _______ layout machines are grouped according to type or function and parts travel to the appropriate location for processing
Workcenter
A flexible line layout may improve assembly-line balance by
allowing work sharing among workstations
A manufacturing cell is generally made up of ______ machines
dissimilar
The required workstation cycle time is determined by
dividing the production time per day by the required output per day
A ______ ________ layout groups dissimilar machines to work on products that have similar processing requirements
manufacturing cell
When attempting to balance an assembly line, the amount of idle time across workstations should be
minimized
the efficiency of an assembly line balance must always be less than or equal to
one
A map showing the flow of materials through a manufacturing system is known as a _____ _____ map
production process
Which of the following is not a step in the process to balance an assembly line
randomly assign tasks to workstations
A production process map is built by
tracking the flow of material through the system
Which of the following is not a way to reduce the required time for a task
use a less skilled worker
Days-of-supply
Average inventory / costs of goods sold x 365
The _______ -________ matrix shows when difference production process types are used in relation to product volume and standardization
Product - process
Total average value of inventory
Sum of raw material, work-in-process, and finished goods inventory
Efficency
Sum of task times / actual number of workstations x workstation cycle time
Manufacturing processes are used to make tangible goods
True
The longest required task time often defined the shortest possible workstation cycle time for production
True
Workcenters are often focused on
one type of operation
The calculated theoretical number of workstations should be
rounded up to the next highest integer
When parts are moved on a conveyor that passed a series of workstations in a uniform time interval, this is called the ________
workstation cycle time
