Operations/Supply Mgmt – HELP!! Who Knows this Stuff?!?!

OTHER SUPPORTING FILES WILL BE GIVEN ONCE ASSIGNMENT HAS BEEN ASSIGNED.

1.(6) 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 → D → G → 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) 24
days

  C) 29
days

  D) 31
days

  E)   none
of the above

6.(5)  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)  7

  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 member of the work force happens to
catch Bubonic Flu, this year’s disease, the installation will take 15
days.  What is the expected time (t_e)
for the equipment installation?

  A)  3 days

  B)  6 days

  C)  7 days

  D)  8 days

  E)  15 days

 

8.(6)  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 annual carrying charge is 20%. 
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 carrying cost
per year?

  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.(4)  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.(3)  Using the data of Question 8: If 1000 are ordered each time, then
what will be the total ordering cost per
year?

  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.(4)   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.(2)  Ohio 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	30	$2.50
Item 7	60	$14.25
Item 8	22	$10.00
Item 9	100	$2.75
Item 10	300	$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
8 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 6 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 22 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

 

Use the
following data to answer questions 19 and 20.

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.(3)  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)  300

C)  250

D)  200

E)  None of the above

21.(3)  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.(5)  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)  200

B)  300

C)  400

D)  500

E)  None of the above

23.(7)  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)  220

B)  160

C)  120

D)  100

E)  None of the above

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