17) Using this MRP record and a lead time of 3 weeks, what should the planned orders be in
week 1?
1
2
3
4
5
Gross Requirements
400
500
300
Scheduled receipts
0
0
0
0
0
Projected ending
Inventory
100
100
Net Requirements
Planned Receipts
300
Planned Orders
A) 200
B) 300
C) 400
D) 500
18) There is no beginning inventory. What are the net requirements in week 4 if there is a
scheduled receipt of 100 units each week and a two week production lead time?
1
2
3
4
5
Gross Requirements
500
450
400
500
300
Scheduled receipts
100
100
100
100
100
Projected ending
Inventory
Net Requirements
Planned Receipts
450
400
300
300
Planned Orders
300
300
A) 250
B) 300
C) 350
D) 400
19) There are 200 units in inventory at the start of week 1. What are the net requirements in week
4 if there is a scheduled receipt of 100 units every other week and a two week production lead
time?
1
2
3
4
5
Gross Requirements
550
450
400
400
500
Scheduled receipts
100
0
100
0
100
Projected ending
Inventory
Net Requirements
Planned Receipts
350
450
Planned Orders
350
300
A) 250
B) 300
C) 350
D) 400
20) There are 50 units in inventory at the start of week 1 for this company, which runs a lot-for-
lot MRP system. There is a one week lead time for all shipping and production quantities
regardless of volume. What are the quantities of the planned order releases for this item for the
first six weeks?
1
2
3
4
5
6
7
8
Gross Requirements
50
20
30
40
Scheduled receipts
Projected ending
Inventory
Net Requirements
Planned Receipts
Planned Orders
A) 20, 30, 0, 40, 20, 0
B) 35, 0, 60, 0, 0, 0
C) 5, 30, 0, 40, 20, 0
D) 35, 0, 0, 40, 20, 0
21) A mechanical cat is made of two front leg assemblies, a body assembly, one tail, one head
assembly, and two back leg assemblies. Each head assembly has two eyes, one nose, one mouth,
and 24 whiskers. Each back leg assembly has one foot, five claws, one each fibula, tibia, and
femur. The cat production company runs a lot for lot system on everything except the legs, which
they order in cases of 50, and the claws, which come by the gross. Lead time for assembly and
shipping is shown in the table. Use the master production schedule for mechanical cats to
complete the MRP record. What’s the planned order release for claws in week 2?
Item
Week
1
2
3
4
5
6
Mechanical Cat
MPS Due Date
75
125
240
300
250
LT = 1 week
Start Assembly
Item
Gross Requirements
Leg Assembly
Scheduled receipts
70
LT = 2 weeks
Projected ending
Inventory
Begin Inv = 20
Net Requirements
Planned Receipts
Planned Orders
Claw
Scheduled receipts
LT = 1 week
Projected ending
Inventory
Begin. Inv. = 65
Net Requirements
Planned Receipts
Planned Orders
A) 2,304
B) 2,376
C) 2,448
D) 2,880
22) A mechanical cat is made of two front leg assemblies, a body assembly, one tail, one head
assembly, and two back leg assemblies. Each head assembly has two eyes, one nose, one mouth,
and 24 whiskers. Each back leg assembly has one foot, five claws, one each fibula, tibia, and
femur. The cat production company runs a lot for lot system on everything except the legs, which
they order in cases of 50, and the claws, which come in boxes of 60. Lead time for assembly and
shipping is shown in the table. Use the master production schedule for mechanical cats to
complete the MRP record. What are the net requirements for claws in week 3?
Item
Week
1
2
3
4
5
6
Mechanical Cat
MPS Due Date
75
125
240
300
250
LT = 1 week
Start Assembly
Item
Gross Requirements
Leg Assembly
Scheduled receipts
70
LT = 2 weeks
Projected ending
Inventory
Begin Inv = 20
Net Requirements
Planned Receipts
Planned Orders
Claw
Scheduled receipts
LT = 1 week
Projected ending
Inventory
Begin. Inv. = 195
Net Requirements
Planned Receipts
Planned Orders
A) 2,275
B) 2,295
C) 2,325
D) 2,455
23) A mechanical cat is made of two front leg assemblies, a body assembly, one tail, one head
assembly, and two back leg assemblies. Each head assembly has two eyes, one nose, one mouth,
and 24 whiskers. Each back leg assembly has one foot, five claws, one each fibula, tibia, and
femur. The cat production company runs a lot for lot system on everything except the legs, which
they order in cases of 36, and the claws, which come by the gross. Lead time for assembly and
shipping is shown in the table. Use the master production schedule for mechanical cats to
complete the MRP record. What’s the planned order release for leg assemblies in week 3?
Item
Week
1
2
3
4
5
6
Mechanical Cat
MPS Due Date
75
125
240
300
250
LT = 1 week
Start Assembly
Item
Gross Requirements
Leg Assembly
Scheduled receipts
70
LT = 2 weeks
Projected ending
Inventory
Begin Inv = 20
Net Requirements
Planned Receipts
Planned Orders
Claw
Scheduled receipts
LT = 1 week
Projected ending
Inventory
Begin. Inv. = 65
Net Requirements
Planned Receipts
Planned Orders
A) 504
B) 612
C) 468
D) 596
24) A mechanical cat is made of two front leg assemblies, a body assembly, one tail, one head
assembly, and two back leg assemblies. Each head assembly has two eyes, one nose, one mouth,
and 24 whiskers. Each back leg assembly has one foot, five claws, one each fibula, tibia, and
femur. The cat production company runs a lot for lot system on everything except the heads,
which they order in cases of 24, and the whiskers, which come in boxes of 1000. Lead time for
assembly and shipping is shown in the table. Use the master production schedule for mechanical
cats to complete the MRP record. What’s the planned order release for whiskers in week 2?
Item
Week
1
2
3
4
5
6
Mechanical Cat
MPS Due Date
75
125
240
300
250
LT = 1 week
Start Assembly
Item
Gross Requirements
Head Assembly
Scheduled receipts
70
LT = 2 weeks
Projected ending
Inventory
Begin Inv = 88
Net Requirements
Planned Receipts
Planned Orders
Whiskers
Scheduled receipts
LT = 1 week
Projected ending
Inventory
Begin. Inv. = 147
Net Requirements
Planned Receipts
Planned Orders
A) 6000
B) 5000
C) 4000
D) 8000
25) A mechanical cat is made of two front leg assemblies, a body assembly, one tail, one head
assembly, and two back leg assemblies. Each head assembly has two eyes, one nose, one mouth,
and 24 whiskers. Each back leg assembly has one foot, five claws, one each fibula, tibia, and
femur. The cat production company runs a lot for lot system on everything except the heads,
which they order in cases of 250, and the whiskers, which come in boxes of 800. Lead time for
assembly and shipping is shown in the table. Use the master production schedule for mechanical
cats to complete the MRP record. What are the net requirements for whiskers in week 2?
Item
Week
1
2
3
4
5
6
Mechanical Cat
MPS Due Date
75
125
240
300
250
LT = 1 week
Start Assembly
Item
Gross Requirements
Head Assembly
Scheduled receipts
70
LT = 2 weeks
Projected ending
Inventory
Begin Inv = 88
Net Requirements
Planned Receipts
Planned Orders
Whiskers
Scheduled receipts
LT = 1 week
Projected ending
Inventory
Begin. Inv. = 147
Net Requirements
Planned Receipts
Planned Orders
A) 5733
B) 5600
C) 5453
D) 5853
26) A deluxe model mechanical cat is made of two front leg assemblies, a body assembly, one
tail, two head assemblies, and two back leg assemblies. Each head assembly has two eyes, one
nose, one mouth, and 24 whiskers. Each back leg assembly has one foot, five claws, one each
fibula, tibia, and femur. The cat production company runs a lot for lot system on everything
except the heads, which they order in cases of 250, and the whiskers, which come in boxes of
600. Lead time for assembly and shipping is shown in the table. Use the master production
schedule for mechanical cats to complete the MRP record. What is the planned order release for
whiskers in week 2?
Item
Week
1
2
3
4
5
6
Mechanical Cat
MPS Due Date
75
125
240
300
250
LT = 1 week
Start Assembly
Item
Gross Requirements
Head Assembly
Scheduled receipts
70
LT = 2 weeks
Projected ending
Inventory
Begin Inv = 88
Net Requirements
Planned Receipts
Planned Orders
Whiskers
Scheduled receipts
LT = 1 week
Projected ending
Inventory
Begin. Inv. = 230
Net Requirements
Planned Receipts
Planned Orders
A) 18,000
B) 16,000
C) 14,000
D) 12,000
27) A deluxe model mechanical cat is made of two front leg assemblies, a body assembly, one
tail, two head assemblies, and two back leg assemblies. Each head assembly has two eyes, one
nose, one mouth, and 24 whiskers. Each back leg assembly has one foot, five claws, one each
fibula, tibia, and femur. The cat production company runs a lot for lot system on everything
except the heads, which they order in cases of 125, and the whiskers, which come in boxes of
333. Lead time for assembly and shipping is shown in the table. Use the master production
schedule for mechanical cats to complete the MRP record. What is the planned order release for
whiskers in week 1?
Item
Week
1
2
3
4
5
6
Mechanical Cat
MPS Due Date
75
125
240
300
250
LT = 1 week
Start Assembly
Item
Gross Requirements
Head Assembly
Scheduled receipts
70
LT = 2 weeks
Projected ending
Inventory
Begin Inv = 88
Net Requirements
Planned Receipts
Planned Orders
Whiskers
Scheduled receipts
LT = 1 week
Projected ending
Inventory
Begin. Inv. = 230
Net Requirements
Planned Receipts
Planned Orders
A) 18,000
B) 16,000
C) 14,000
D) 12,000
28) An MRP system cannot answer the question:
A) “how much?”
B) “when?”
C) “what?”
D) “why?”
29) Which of these actions would tend to make an MRP system less nervous?
A) using the same component, such as a fastener, at multiple levels throughout the product
structure tree
B) eliminating lot size requirements wherever possible
C) increasing the number of levels in a product structure tree
D) increasing the minimum order quantities only at the highest level of a bill or materials
30) MRP is NOT capable of:
A) lowering inventory levels.
B) helping a firm meet their master schedule commitments.
C) telling a firm’s suppliers what needs to be made and by when.
D) sequencing jobs at a machining center.
31) A(n) ________ is a record or graphical rendering that shows how all the subassemblies,
intermediates, parts, and raw materials are put together to make the Level 0 item.
32) The process of ________ occurs when a planner works backwards from the master
production schedule and the product structure tree to determine when all parts and subassemblies
must be ordered and assembled in order to meet MPS due dates.
33) Cow Company used the master schedule to determine how many workers and the number of
machine hours would be needed for each production period. This approach is known as
________.
34) In material requirements planning, units already on order are referred to as ________
receipts and new orders are termed ________ receipts.
35) Consider the product structure tree shown below:
Assume that the company using this product structure tree has 5 items each at the 0 level, 10
items each at the 1 level and 20 items each at the 2 level. How many units of A, B, and E will the
company need to acquire in order to ship an order of 20 X’s?
34
36) The table shows a master schedule for end item Z that is produced according to the product
structure tree shown below. Beginning inventories and lead times for components of Z are given
in the table. The lot sizes for A, B, and C are 100 units. Complete a materials requirement plan
for components A, B, and C.
Period
1
2
3
4
5
6
MPS Qty
0
0
0
250
275
275
Component
A
B
C
D
E
Lead Time
1
2
2
2
1
Beginning Inv
50
75
100
15
40