OPMA (3306) CH. 6 - Learnsmart

Workcenters are often structured to ______________ the movement of material.

Optimize

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

Use a less skilled worker Reason: A more skilled worker may reduce the required time, a less skilled will most likely increase it.

There are ______________ dimensions depicted on a product process matrix.

two; The first dimension relates to the VOLUME of a particular product or group of standardized products. STANDARDIZATION is shown on the vertical axis and refers to variations in the product that is produced.

Inventory Turn is calculated by:

Cost of Goods Sold/Average Inventory

The ___________________ - ______________________ matrix shows when difference production process types are used in relation to product volume and standardization.

Product Process

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 need to know the _____________ __________________ per day and the required ______________________ per day (in units).

Production time (1st line) Output (2nd line) Cycle Time = Production time per day/Required output per day (in units)

Rank the production process layouts from lowest-to-highest volume (top to bottom).

Project Workcenter Manufacturing cell Assembly line

Sort the steps associated with making a product into their order (from first to last).

Sourcing, Making, Delivering

The ___________ relationship describes the order in which tasks must be completed.

precedence

Lead time is the time needed to respond to a customer ____________________.

order

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

Chemicals. As well as,other materials such as petroleum and drugs.

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

Customer order decoupling point

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?

Days-of-Supply = Average Inventory/Cost of Goods Sold x 365 DoS = 1.5M/3.75M x 365 DoS = .4 x 365 = 146

Which of the following statements about inventory measure is TRUE?

Days-of-Supply measures how long (on average) a firms inventory can support sales. Inventory Turn compares cost of goods sold to average inventory.

Which of the following is NOT a step in the process of developing a manufacturing cell?

Determine which machines perform the same process.

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?

Efficiency = Sum of task times (T)/# of workstations (Na) x workstation cycle times (C) E = 120/6(27) = 120/162 = .7407 And so, E = 74.1%

An assembly line must produce 1000 units in an 8 hour day. Assuming the line operates continuously, what is the required workstation cycle time?

First, convert hours into seconds, since tasks are completed in seconds. 8hrs = 28,800 seconds Cycle Time = 28,800/1000 = 28.8 sec

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

Lead Time

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

Lean

The long term relationship between inventory, throughput, and flow time is described by __________________ law.

Little's Little's Law: the formula used is: Inventory = Throughput rate x Flow time

Which of the following is NOT a benefit of cellular layout?

MORE in process inventory. Reason: These cells are designed to perform a specific set of processes, and the cells are dedicated to a limited range of products.

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

Manufacturing Cell layout

In an assembly-to-order system, the total number of unique combinations possible is calculated by ____________________________.

Multiplying the number of options for each choice together. Total number of combinations = N1 x N2 x .....x N(n)

Identify the TRUE statement about assembly line and continuous process layouts (check all that apply):

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. (The assembly steps are done in areas referred to as "stations," and typically the stations ARE linked by some form of material handling device) In a continuous process, a product moves continuously through the process.

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

One

When discussing an assembly line, there are differences among line types that include all of the following EXCEPT:

Systematic Planning Reason: ALL assembly lines involve systematic planning.

True or False? Carrying finished goods inventory is more expensive than carrying raw materials inventory?

TRUE Reason: An item in finished goods inventory typically contains all the raw materials needed to produce the item. So, from a cost view it includes the cost of the material plus the cost to fabricate the finished item.

Match each inventory measure with it's definition:

Total Average Value of Inventory: Sum of Raw Materials, Work-in-Progress, and Finished goods. Inventory Turn: Cost of Goods Sold/Average Inventory Days-of-Supply: Average Inventory/Cost of Goods Sold x 365

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

Workstation cycle time

A manufacturing cell is generally made up of _______________ machines.

dissimilar

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

make-to-order

Which of the following is NOT a common layout format?

manufacturing AREA Reason: The format by which a facility is arranged is defined by the general pattern of work flow; there are five basic structures: project, workcenter, manufacturing CELL, assembly line, and continuous process.

A ________________ _________________ layout groups dissimilar machines to work on products that have similar processing requirements.

manufacturing cell

When a company groups dissimilar machines to work on products that have similar processing requirements, it's using a _____________ layout.

manufacturing cell

In a project layout, ______________ and _________________ are arranged around the production point.

materials (1st line) equipment (2nd line)

When attempting to balance an assembly line, the amount of idle time across workstations should be _______________________.

minimized

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

project layout

The calculated theoretical number of workstations should be __________________.

rounded up to the next highest integer.

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

workcenter