DSCI 3210 exam 3

Sweet-Dreams Inc- five jobs waiting to be processed. Job A has a flow time of 8 days, b of 10, c of 15, d of 20, and e of 27. What is the mean flow time?

(the average) 16 days

Which of the following is not one of the seven wastes?

*check slides (could be procurement, assignment, or energy)

Suppose that papers for a newspaper stand cost $0.40 and sell for $0.80. They currently have no salvage value. If the stand owner is able to find an outlet that would provide a salvage value of $0.10, what would be the increase in service level?

.07

A work center has an actual input of 280 hours and actual output of 270 hours, what is the change in back-log?

10

A certain type of computer costs $1,000, and the annual holding cost is 25%. Annual demand is 10,000 units, and the order cost is $150 per order. What is the approximate economic order quantity? a. 16 b. 70 c. 110 d. 183 e. 600

110

The MPS calls for 50 units of Product A and 60 of B. There are currently 25 of Product B on hand. Each A requires 2 of part C; each B requires 5 of C. There are 160 units of C available. The net requirements for C are a. 115 b. 175 c. 240 d. 690 e. 700

115

If daily demand is normally distributed with a mean of 15 and standard deviation of 5, and lead time is constant at 4 days, 90 percent service level will require safety stock of approximately a. 7 units b. 10 units c. 13 units d. 16 units e. 26 units

13 units

The MPS calls for 110 units of Product A. There are currently 60 of Product A on hand. Each A requires 4 of Part B. There are 20 units of B available. The net requirements for B are a. 20 b. 120 c. 180 d. 240 e. 440

180

An order for 110 units of Product A has been placed. There are currently 60 units of Product A on hand. Each A requires 4 units of Part B. There are 20 units of B available. What are the net requirements for B? A) 20 B) 120 C) 180 D) 240 E) 440

180 (draw a product tree)

Five jobs, using LPT, what is the makespan?

27

The MPS calls for 110 units of product M. There are currently 30 of product M on hand. Each M requires 4 of component N. There are 20 units of N on hand. The net requirements for N are a. 150 b. 170 c. 300 d. 320 e. 440

300

If the demand for product A is 50 units, what will be the gross requirement for component E? (give product tree)

300 in one scenario, 50 in other

If daily demand is constant at 10 units per day, and lead time averages 12 days with a standard deviation of 3 days, 95 percent service requires a safety stock of approximately a. 28 units b. 30 units c. 49 units d. 59 units e. 114 units

49 units

Lead time for computers is 7 days with daily demand of 5 computers and a safety stock of 1 day. Each kanban holds 8 computers. What is the correct number of kanbans? A) 4.5 B) 1 C) 5 D) 7 E) 8

5 kanbans

Heavy Eyes Inc- five jobs waiting to be processed using SPT priority rule. Their processing times are shown in the following table. What is the mean flow time?

5.4 days

If demand for A is 30 units, and there are 10 units of B on hand and none of C, how many units of part D will be needed?

70

Dependent demand and independent demand items differ in that...

All of the above (for any product, all components are dependent-demand items the need for independent-demand items is forecast the need for dependent-demand items is calculated)

A restaurant runs a special promotion on lobster and plans to sell twice as many lobsters as usual. When this large order is sent to the distributor, the distributor assumes the large size is a trend, not a one-time event. The distributor therefore places an even larger order with the lobsterman. This behavior is the result of which of the following?

Bull-whip effect

CPFR

Collaborative Planning, Forecasting, and Replenishment (opportunity when managing integrated supply chain)

Seven Wastes

DOMITOQ 1. defective product 2. overprocessing 3. motion 4. inventory 5. transportation 6. overproduction 7. queues

EOQ

Economic Order Quantity robust model (works even if all parameters/assumptions not met) (total cost curve flat) demand is known lead time is known order received instantaneously and all together quantity discounts not possible stock outs can be avoided

ERP

Enterprise Resource Planning automates and integrates the majority of businesses processes

Which of the following is an aid used to monitor jobs in process?

Gantt schedule chart

The Japanese concept of a company coalition of suppliers is...

Keiretsu

Describe the "few suppliers" sourcing strategy

LT relationships, learning-curve improvements, suppliers more willing to participate in JIT

A paint company mixes ten different base colors into 3,000 different color options. If production scheduling is organized around the ten different base colors , then the bills of material are classified as which of the following? A) phantom B) planning C) modular D) low-level E) A and B

Modular

Hewlett-Packard delays customization of its laser printers as long as possible. This is an example of which of the following?

Postponement

In most manufacturing industries, which of the following represents the largest cost of the firm?

Purchasing

Describe the "virtual company" sourcing strategy

ST or LT relationships rely on variety of suppliers to provide services on-demand and in a changing mkt flexible, lean performance, low capital investment, flexible, speedy

Which of the following is not one of five parts of supply chain operations reference (SCOR)?

Sell (actual five parts- plan, source, make, deliver, and return)

Which of the following best describes vertical integration?

To produce goods or services previously purchased

TPS emphasizes

Toyota Production System emphasizes continuous improvement, respect for people, and standard work practices (assembly-line environment)

VMI

Vendor-Managed Inventory

distribution resource planning (DRP) is

a time-phased stock replenishment plan for all levels of a distribution network

In MRP, system nervousness is caused by

a. management's attempt to continually respond to minor changes in production requirements

ABC analysis divides on-hand inventory into 3 classes generally based on...

annual dollar volume

A short-term scheduling activity called loading...

assigns jobs to work centers

A fried chicken fast-food chain that acquired feed mills and poultry farms has performed a. horizontal integration b. forward integration c. backward integration d. current transformation e. job expansion

backward integration

Drop shipping and special packaging (does what?)

bypasses the seller and reduces costs

JIT focuses on

continuous forced problem solving

EDD stands for

earliest due date

If safety stock is desired, it should be built into which portion of MRP?

either raw materials or finished goods

Orders are processed in a sequence in which they arrive if the ________ rule sequences the jobs

first come first served

Describe the "joint venture" sourcing strategy

formal collaboration avoid conceding competitive advantage and diluting brand can enhance skills, secure supply, and reduce costs

variability

is the ENEMY

Which of the following statements regarding production order quantity (POQ) model is true?

it relaxes the assumption that all the order quantity is received at one time

What are the six sourcing strategies

many suppliers few suppliers keiretsu networks vertical integration virtual companies joint ventures

Describe the "keiretsu network" sourcing strategy

middle ground between few suppliers and vertical integration supplier part of company coalition may give financial support to suppliers (loans/ownership) LT relationship

Which of the following statements regarding pull systems is true?

problems become more obvious

Describe the "vertical integration" sourcing strategy

producing goods/services that were previously purchased forward- towards the customer backward- towards the suppliers

In MRP, the number of units projected to be available at the beginning of each time period refers to

projected on-hand

Which of the following is generally found in most lean environments?

pull systems

Direction in MRP systems can be minimized when safety stock is held at the

purchased component or raw material level AND finished goods level

Which of the following statements regarding MRP in services is true?

services such as restaurant meals illustrate dependent demand and require product structure trees, bills-of-material, and scheduling

Which of the following dispatching rules ordinarily gives the best results when the criterion is lowest time for completion of full sequence of jobs?

shortest processing time (SPT)

Lean operations

supply the customer with exactly what they want, when they want it, without waste, through continuous improvement (driven by "pulling" customer orders) encompass both JIT and TPS

Which of the following statements is true about Kanban systems?

the customer workstation signals to the supplier workstation when production is needed

One of the tools that is particularly useful in reducing the system nervousness in the MRP system is (are) a. modular bills b. time phasing c. time fences d. lot sizing e. closed loop system

time fences

The two most basic inventory questions answered by the typical inventory model are...

timing and quantity of orders

Most inventory models attempt to minimize

total inventory-based costs

Describe the "many suppliers" sourcing strategy

typically based on price, heightened competition and responsibility for suppliers