Project #30578 - Process and Operations Management

 

1.(7) The following table defines a project.

           

Activity

 Immediate Predecessors

Activity Time

A

-

   5 days

B

A

   9 days

C

A

   8 days

D

B

   6 days

E

B, C

   4 days

F

E

   4 days

G

D, F

   3 days

 

            The minimum time required to complete the project is:

            A) 23 days

            B) 24 days

            C) 25 days

            D) 39 days

            E)         none of the above

 

2.(4)    Use the network given in the Word file in the Final Examination Session under Course Content.  The early start time (ES) for job G is:

            A)  13

            B)  16

            C)  21

            D)  25

            E)  38

 

3.(5)    Use the network given in the Word file in the Final Examination Session under Course Content.  The late finish time (LF) for job C is

            A)  7

            B)  14

            C)  16

            D) 21

            E)  22

 

4.(5)    Use the network given in the Word file in the Final Examination Session under Course Content.  The critical path is given by:

            A)  A → B → E → H

            B)  A → B → F → H

            C)  A → B → F → G → H

            D)  A → C → F → H

            E)  A → C → F → G → H


5.(4)    Use the network given in the Word file in the Final Examination Session under Course Content. 

            The minimum time required to complete the project is:

            A) 23 days

            B) 25 days

            C) 29 days

            D) 31 days

            E)         none of the above

 

6.(4)    Use the network given in the Word file in the Final Examination Session under Course Content.  The slack at activity D is:

            A)  0

            B)  5

            C)  8

D)  13

E)  None of the above

 

7.(4)    One part of a PERT project, installing equipment, will most likely be completed in 6 days.  However, if there are no worker absences, the equipment can be installed in 3 days.  If a members the work force happens to catch Bubonic Flu, this year’s disease, the installation will take 15 days.  What is the expected time (te) for the equipment installation?

            A)  3 days

            B)  6 days

            C)  7 days

            D)  8 days

            E)  15 days

 

8.(4)    A firm desires to control inventory levels so as to minimize the sum of holding and order costs.  It costs the firm $50 to place an order.  The firm estimates its inventory carrying costs at $2/unit/year.  Weekly demand is 100 units, and there are 50 weeks in the work year.  The item costs $10 per unit.  The lead-time for the product is 3 weeks.  Assume that there are 5 working days per week.

           

            What quantity of items should the firm order each time so as to minimize total inventory costs, i.e., what is the EOQ?

            A)  100

            B)  224

            C)  500

            D)  1000

            E)  none of the above

           

9.(4).   Using the data of Question 8: If 400 units are ordered each time (i.e., EOQ = 400), then what will be the total annual holding cost?

            A)  $100

            B)  $200

            C)  $400

            D)  $800

            E)  $4000

           

10.(3)  Using the data of Question 8: If 200 units are ordered each time, how many orders will be placed in a year?

            A)  2

            B)  5

            C)  10

            D)  20

            E)  25

           

11.(3)  Using the data of Question 8: If 200 units are ordered each time, then the time between orders (in working days) is

            A)  2

            B)  5

            C)  10

            D)  20

            E)  25

           

12.(4)  Using the data of Question 8: If 1000 are ordered each time, then what will be the total annual order cost?

            A)  $50

            B)  $100

            C)  $200

            D)  $250

            E)  $300

             

13.(3)  Use the data of Question 8 and assume no safety stock or service level requirement.  In order not to run out of stock before the receipt of a new order, at what inventory level should the firm place an order?  That is, what is the reorder point equal to?

A)  50

B)  160

C)  200

D)  300

E)  400

 

14.(5) Given that unit cost = $25, annual carrying charge = 10%, annual demand = 7500 units and ordering cost = $15 per order.  Assume that there are 50 weeks in the work year and 5 working days per week.  The lead-time for the product is 2 weeks.  The EOQ is: 
A)  150 units
B)  212.13 units
C)  300 units
D)  500 units
E) none of the above


15.(3) Lincoln Machine Tool Company maintains an inventory pool consisting of 10 items. Each of these items has a unique demand pattern and may require a different kind of inventory management system. The annual demand pattern and the unit cost of these items are given in the following table.  Classify the items in A, B, and C categories according to annual dollar usage.

 

 

Annual Usage

Unit Cost

Item Type

in thousands

in Dollars

Item 1

10

$2.50

Item 2

30

$1.25

Item 3

20

$16.00

Item 4

10

$0.75

Item 5

20

$3.00

Item 6

33

$2.50

Item 7

60

$14.25

Item 8

22

$10.00

Item 9

100

$2.75

Item 10

500

$4.25

 

            Using the above data, Item 7 will be classified as:

A)  A item

B)  B item

C)  C item

D)  None of the above

 

16.(3). Using the data of Question 15, Item 6 will be classified as:

A)  A item

B)  B item

C)  C item

D)  None of the above

 

17.(3)  Using the data of Question 15, Item 8 will be classified as:

A)  A item

B)  B item

C)  C item

D)  None of the above

 

18.(6)  One end item A requires three component parts: B, C, and D. The bill of material indicates that for each completed A, 3 units of B, 2 units of C, and 1 unit of D are required. Current inventory for the four items is as follows: There are 18 As, 40 Bs, 50 Cs and 35 Ds in stock. If the lead time for all items is one week and there are no scheduled receipts for any item, how many units of product A can be delivered to customers at the start of next week (week 2)?

A) 35
B) 31 
C) 25
D) 13
E) None of the above

           

Product D has gross requirements, on-hand inventory, and scheduled receipts as indicated in the time-phased inventory status record below.  Its lead time is 3 weeks.

 

 

 

Item D

 

1

 

2

 

3

 

4

 

5

 

6

 

Gross Requirements

 

100

 

300

 

100

 

300

 

200

 

50

 

On Hand/ Scheduled Receipts

 

700

 

 

 

 

 

 

 

 

 

 

 

Net Requirements

 

 

 

 

 

 

 

A

 

 

 

 

 

Planned Order Releases

 

 

 

B

 

 

 

 

 

 

 

 

 

19.(4)  The value of entry A is:

A)  100

B)  200

C)  300

D)  700

E)  None of the above.

 

20.(4) The value of entry B is:

A)  50

B)  200

C)  250

D)  300

E)  None of the above

           

21.(4)  Use the BOM given in the Word file in the Final Examination Session under Course Content.  If the master schedule calls for the production of 50 units of A, how many units of E are needed?

A)   50

B)  100

C)  200

D)  400

E)  None of the above

 

22.(4)  Use the BOM given in the Word file in the Final Examination Session under Course Content.     If the MPS calls for the production of 50 units of item A, how many units of item D are needed?

            A)  100

B)  150

C)  300

D)  400

E)  None of the above

 


23.(6)  Use the BOM given in the Word file in the Final Examination Session under Course Content Now assume that 50 units of item A are called for by the MPS.  On-hand inventory consists of 20 units each of items A, B, D and E.  What is the net requirement for item D?

A)  40

B)  100

C)  120

D)  140

E)  160

 

24.(4)  The master production schedule for two products, A and B, is shown below. To manufacture item A, four (4) units of component C are required. To manufacture item B, three (3) units of component C are required. Using this information, determine the gross requirements for component C to start week 1.

 

       Master Production Schedule: Wk 1

Product A

30

Product B

25

 

A)  195

B)  220

C)  155

D)  190

E)  None of the above

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Due By (Pacific Time) 05/12/2014 12:00 pm
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