CH 6 LS OPMA

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the term "assembly line" refers to progressive assembly linked by some material handling device

T

What is not true about a workcenter layout?

A workcenter layout is commonly used for systems with high production volumes

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 type of work flow is appropriate when production volume is high

Assembly line

Average Inventory / Cost of goods sold x 365

Days-of-supply

In balancing an assembly line, workstation cycle time has to be less than the time between successive units coming off the end of the line

F

Steps for making a product:________, ________, _______

Sourcing, Making, Delivering

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

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

Throughput rate times flow time

workcenters with large amounts of interdepartmental traffic are often placed

adjacent to each other

Which work flow structures is appropriate for a process with great flexibility to produce a variety of products?

Work center

The efficiency of an assembly-line balance must always be less than or equal to __

1

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

Product-process matrix

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

Project layout

The closer the customer is to the customer order decoupling point the more quickly the customer receives the product

T

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

T

The essential issue in satisfying customers in the make to stock environment is to balance the level of finished inventory against the level of service to the customer

T

The first step in balancing an assembly line is to specify the precedence relationships among tasks to be performed on the line

T

The focus in the make to stock environment is providing finished goods where and when the customers want them

T

The longest required task time often defines the shortest possible workstation cycle time for production

T

The objective of mixed-model line balancing is to meet the demand for a variety of products and avoid building high inventories

T

The volume requirements for the product are one determinant of the choice of which process structure to select

T

a general purpose machine is less capable than a special purpose machine in certain tasks but can perform a broader variety of tasks

T

a high-level map or diagram of a supply chain process can be useful to understand how material flows and where material is help

T

break even analysis can be used to help decide whether to perform a task with a special purpose machine or a general purpose machine

T

engineer to order firm will work with the customer to design the product and then make it from purchased materials, parts and components

T

one trade-off illustrated by the product process matrix is between flexibility and cost

T

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

precedence

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

product-process

workcenters are often structured to _________ the movement of material

optimize

lead time is time needed to respond to a customer ________

order

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

workstation cycle time

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

The product-process matrix has two dimensions - product _______________ and product _________________

volume, standardization

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 x flow time

Cost of goods sold / Average Inventory

Inventory turn

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

Manufacturing cell layout

A project layout is characterized by a high degree of task ordering

T

Assembling to order means moving the customer order decoupling point from finished goods to components

T

Carrying finished goods inventory is more expensive than carrying raw material inventory

T

For the purposes of assembly-line balancing, the required workstation cycle time is found by dividing production time per day by the required units of output per day

T

In assembly-line balancing the theoretical minimum number of workstations is found by a ratio of the sum of all task times divided by the cycle time

T

In designing a production layout a flexible line layout might have the shape of a U

T

In designing a production line mixed-model line balancing might be used by JIT manufacturers

T

Little's law can be thought of as a relationship between units and time

T

Sum of raw material, work-in-process, and finished goods inv

Total average value of inventory

A production process map is built by

Tracking the flow of material through the system

Which of the following is one of the dimensions depicted on a product-process matrix?

Volume

a flexible line layout may improve assembly line balance by

allowing work sharing among workstations

one methodology used to evaluate investment decisions where the investment entails an initial investment, fixed costs, and variable costs is _____-_____ analysis

break even

In a ______________ process, a product moves continuously through the process

continuous

Often, the item being produced in a ____________ process is a liquid or chemical that actually flows through the system

continuous

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 manufacturing cell is generally made up of __________ machines

dissimilar

inventory turn is calculated by

dividing cost of goods sold by average inventory value

The required workstation cycle time is determined by

dividing the production time per day by the required output per day

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

lean

a __________ line layout can increase opportunities for work sharing among workstations in an assembly line

flexible

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

lead time

workcenter layouts are generally used for ____ volume systems

low

firms that make the customer's product from raw materials, parts, and components are called

make-to-order

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

in a project layout, ____________ and __________ are arranged around the production point

materials, equipments

when attempting to balance an assembly line, the amount of idle time across workstations should be _______________

minimized

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

A map showing the flow of materials through a manufacturing system is known as a _________ __________ map

production process

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

production time, output

In an assembly line, a product goes through a _____________ set of steps

progressive

which layout format is utilized when a relatively low number of units will be produced

project layout

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

size and bulk of the product

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

workcenter


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