1. 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. 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. 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. 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. 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. 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. 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 yearΓ’ΒΒs 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. 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. Using the data of Question 8: If 400 units are ordered
each time (i.e., EOQ = 400), then what will be thetotal annual holding cost?
A) $100
B) $200
C) $400
D) $800
E) $4000
10. 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. Using the data of Question 8: If 200 units are ordered
each time, then thetime between orders (in working days) is
A) 2
B) 5
C) 10
D) 20
E) 25
12. Using the data of Question 8: If 1000 are ordered each
time, then what will be thetotal annual order cost?
A) $50
B) $100
C) $200
D) $250
E) $300
13. 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. 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 is2weeks. The EOQ is:
A) 150 units
B) 212.13 units
C) 300 units
D) 500 units
E)none of the above
15. 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. 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. 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. One end itemA requires three component parts:B,C, andD.
The bill of material indicates that for each completedA, 3 units ofB, 2 units
ofC, and 1 unit ofD are required. Current inventory for the four items is as
follows: There are 18As, 40Bs, 50Cs and 35Ds 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 productA 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
600
300
200
0
0
Net Requirements
0
0
0
?
200
50
Planned Order Releases
100
?
50
19. The value of entryA is:
A) 100
B) 200
C) 300
D) 700
E) None of the above.
20. The value of entryB is:
A) 50
B) 200
C) 250
D) 300
E) None of the above
21. 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 ofA, how many units ofE are needed?
A) 50
B) 100
C) 200
D) 400
E) None of the above
22. 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 itemA, how many units of itemD are needed?
A) 100
B) 150
C) 300
D) 400
E) None of the above
23. Use the BOM given in the Word file in the Final
Examination Session under Course Content Now assume that 50 units of item Aare
called for by the MPS. On-hand inventory consists of 20 units each of itemsA,B,
D andE. What is the net requirement for itemD?
A) 40
B) 100
C) 120
D) 140
E) 160
24. 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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