OPMA CHP 6

Which of the following basic types of process structures is one which equipment or work processes are arranged according to the progressive steps by which the product is made?

Assembly line

Which of the following is NOT a way to reduce the required time for a task? A. Product Redesign B. Share the task among several workstations C. Work overtime D. Use a less skilled worked

D. use a less skilled worker

The placement of which of the following is not determined by production process organization decisions?

Emergency exits

Which layout allocates dissimilar machines into cells to work on products that have similar shapes and processing requirements?

Manufacturing cell layout

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

Product-Process

Which of the following is not a basic type of process structure

Product-process matrix

A map showing the flow of materials through a manufacturing system is known as ______ ____ map

Production Process

Which of the following equations is correct for calculating the required workstation cycle time?

Production time per day / Required output per day (in units)

Which of the following basic types of process structures is one which similar equipment or functions are grouped together?

work center

Which of the following is a basic type of process structure

work-center

The efficiency of an assembly-line balance must always be less than or equal to____?

ONE

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 continous 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.6

What are the 4 types of firms?

1. Make-to-stock 2. Assemble-to-order 3. Make-to-order 4. Engineer-to-order

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

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

Sort the steps associated with making a product into their order

1. Sourcing 2. Making 3. Delivering

A computer manufacturer offers 3 types of hard disk drive, 2 types of monitor, 4 types of battery and 5 choice of operating system. How many total combinations are possible using these choices?

120 (3 * 2 * 4 * 5)

Last year a firm had an average inventory of $1,500,000 and the Cost of goods sold was $3,750,000. What was the days-of-supply last year?

146 [(Avg. Inventory / COGS) * 365]

There are ___ dimensions depicted on a product- process matrix

2

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

28.8secs (8 * 60 * 60/ 1000)

If the sum of all task times is 100 seconds and the required cycle time is 21 seconds, what is the theoretical minimum # of workstation?

5 (sum of task times/ required cycle time) ( 100/21= 4.76; round up up to 5)

For an assembly line system with 6 workstations, the cycle time is 27 seconds and the sum of task times is 120 seconds. What is the efficiency of this balance?

74.1 (Efficiency = Sum of task times / Actual # of workstations * Workstation cycle time)

Workcenters (Job shop) with large amount of interdepartmental traffic are often placed?

Adjacent to each other

Which of the following products would use a project layout? A. Bridge B. Laptop C. Mass Produced Toy D. Automibile

Bridge

When discussing and assembly line, there are differences among line types that include all of the following EXCEPT? A. material handling devices B. workstation characteristics C. systematic planning D. Length of the line

C. Systematic planning

A manufacturing cell is generally made up of ____________ machines

Dissimilar

The total work at a workstation is equal to the sum of all tasks to complete a product T/F

False

A ________ line layout can increase opportunities for work sharing among workstations in an assembly line.

Flexible

According to Little's Law, which of the following ratios is used to find throughput rate?

Inventory/flow time

Little's Law relates inventory, throughput rate, and flow time as...

Inventory= Throughput Rate * Flow Time

The time needed to respond to a customer order is called the

Lead time

The practice of achieving high levels of customer service with a minimal inventory investment is known as ______ manufacturing

Lean

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

Make-to-Stock

A __________ ______ layout groups dissimilar machines to work on products that have similar processing requirements

Manufacturing Cell

Which of the following is NOT a benefit of a cellular layout? A. better human relations B. More in-process inventory C. Improved operator expertise D. Faster production setup

More in-process inventory

Workcenters are often focused on

One type of operation

Lead time is the time needed to respond to a customer ______?

Order

The _______ relationship describes the order in which tasks must be completed

Precedence

The calculated theoretical number of workstations should be __________________

Rounded up to the next highest integer.

When balancing an assembly line, which of the following is not a way to reduce the longest task time below the required workstation cycle time?

Speed up the assembly line transfer mechanism

A difference between project and continuous flow categories of process flow structures is which two of the following?

The size and bulk of the product

Inventory is positioned at the customer order decoupling point to allow?

The supply chain to operate independently

According to Little's law, which of the following can be used to estimate work-in-process inventory?

Throughput rate times flow time

A production process map is built by

Tracking the flow of material through the system

Carrying finished goods inventory is more expensive than carrying raw material inventory? T/F

True

In a ________ layout machines are grouped according to type or function and parts travel to the appropriate location for processing.

Workcenter

The time between successive units coming off the end of an assembly line is referred to as:

Workstation cycle time

Days of supply

average inventory divided by COGS * 365

Which of the following is not a step in developing a manufacturing cell layout?

disposing of left-over machinery and outsourcing ungrouped processes

Which of the following is not considered a major work flow structure?

fabrication

Firms that service customers from finished goods inventory are known as which of the following?

make-to-stock

In a project layout, _____ and ______ are arranged around the production point.

materials and equipments

Inventory Turn

the cost of goods sold divided by the average inventory value

Total average value of inventory

the sum of the value (at cost) of the raw material, work-in process, and finished goods inventory

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

workstation cycle time