Ch. 6 OPMA Learnsmart

The point in the supply chain where inventory is positioned to allow the preceeding processes to operate independently is the:

Customer order decoupling point

For an assembly line system with 6 workstations, the cycle time is 27 seconds and the sume of task times is 20 seconds. Whats the effeciency of this balance?

Efficiency= Sum of Task times/ (actual #of workstations x workstation cycle time) Efficiency= 120/(6x27) = 0.7407=74.1%

Which layout format groups machines to work on products that have similar shapes & processing requirements

Manufacturing cells

To determine the required workstation cycle time, an analyst needs to know the ______ per day & the required _______ per day (in units)

Production Time & required Output

When discussing an assembly line, there are differences among line types that include all except:

-Workstation characteristics -Length of the line -Material handing services X-Systematic planning

Rank the production process layouts from lowest-to-highest-volume

1. Project 2. Workcenter 3. Manufacturing cell 4. Assembly Line

Which of the following describes the step where parts are procured from one or more suppliers?

Sourcing

Workcenters with large amounts of interdepartmental traffic are often placed:

Adjacent to each other

A flexible line layout may improve assembly-line balance by:

Allowing work sharing among workstations

An assembly line must produce 1,000 units in a 8hr day. Assuming the line operates continuously, whats the required workstation cycle time?

C=Product Time per day/Required output per day (8*60)=480 * 60=28,800 28,800/1000=28.8 seconds

Which of the following goods would a continuous process be used?

Chemicals

A manufacturing cell is generally made up of _______ machines.

Dissimilar

True or False The total work at a workstation is equal to the sum of all tasks to complete the product

False

Last year a firm had an avg of $1,500,000 & the cost of goods sold was $3,750,000. What was the inventory turn last year?

Inventory Turn = Cogs/Avg Inv Value = 3,750,000/1,500,000= 2.5

The long-term relationship between inventory, throughput, and flow time is described by:

LIttles law

Firms that service customers from finished goods inventory are known as?

Make to stock

Which type of firm invests in lean manufacturing programs in order to improve customer service levels for a given inventory system?

Make to stock

Which type of firm invests in lean manufacturing programs in order to improve customer service levels for given inventory investment?

Make to stock

Which layout format groups machines to work on products that have similar shapes & processing requirements?

Manufacturing cell

In a project layout,_____ & _______ are arranged around the production point.

Materials & Equipment

If inventory turn is known, days of supply is calculated by:

Multiplying the inverse of inventory turn by 365 days

In an assemble-to-order system, the total number of unique combinations possible is calculated by:

Multiplying the number of options for each choice together

On a assembly-line, the order in which tasks must be performed is called______

Precedence Relationship

The _______-______ matrix shows when difference production process types are used in relation to product volume & standardization.

Product process

Identify the layout format that is utilized when the product being manufactured remains in a fixed location

Project layout

What are the 5 basic workflow structures?

Project, Workcenter, manufacturing cell, Assembly line, continuing process

The calculated theoretical number of workstations should be _______

Rounded up to the next highest integer

A production process map is built by:

Tracking the flow of material through the system

True or False The customer order decoupling point is where inventory is positioned in the supply chain

True

Which of the following is not a way to reduce the required time for a task?

Use a less skilled worker

When parts are moved on a conveyor that passes a series of workstations in a uniform time interval, this is called_______

Workstation Cycle TIme

Which of the following statements about inventory measures is true?

X- Inventory turn and days of supply are unrelated measures X- Total avg inventory is the best measure of inventory -Inventory turn companies cost of goods sold to average industry -Days of supply measures how long (on avg) a firms inventory can support sales.

Which of the following is NOT true about a workcenter layout?

X-In a workcenter layout, machines w/ similar functions are grouped together X-A workcenter layout is also called a job shop X-A workcenter layout can produce a wide variety of products -A workcenter layout is commonly used for systems w/high production volumes.

If inventory turn is known, days of supply is calculated by

multiplying the inverse of inventory turn by 365days

The effeciency of an assembly line balance must always be less than or equal to ______

one

Lead time is the time needed to respond to a customer________

order