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