Question 5

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If:

C_i = capacity requirements in units of time for work order i

S_i = setup or changeover time for work order i

P_i = processing time for each unit of work order i

Q_i = size of order i in numbers of units,

then the total capacity required for all work orders, can be expressed by the following formula:

Select one:

a.

C_i = [P_i - (S_i Q_i)]

b.

C_i = [S_i + (P_i Q_i)]

c.

C_i = S_i + (P_i Q_i)

d.

C_i = [S_i - (P_i Q_i)]

e.

C_i = [S_i (P_i +Q_i)]

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Which of the following statements is FALSE of a fixed-period system (FPS)?

Select one:

a.

In FPS, sufficient stock is ordered when the inventory position reaches or drops below the reorder point.

b.

In FPS with uncertain demand, the replenishment level is chosen to include the demand during the review period and lead time, plus any safety stock.

c.

In FPS, inventory position is checked only at fixed intervals of time, but not continuously.

d.

In FPS with uncertain demand, orders are placed with the same periodicity, but not necessarily for the same order quantity.

e.

In FPS, orders are placed at the time of review to bring the inventory position up to the replenishment level.

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Which of the following is NOT a short-term capacity management option:

Select one:

a.

Shifting work to slack periods

b.

Rental or lease of equipment

c.

Sharing equipment

d.

Provision of customers with an opportunity for reservations

e.

Small capacity increases to match average demand

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Which one of the following statements is FALSE in the context of sequencing performance criteria?

Select one:

a.

The flow-time is the difference between the completion time of a job and ready time for that same job when all materials, specifications, and so on were available.

b.

Lateness is the amount of time by which the completion time exceeds the due date.

c.

Lateness is the difference between the completion time and the due date.

d.

Tardiness is the amount of time by which the completion time exceeds the due date.

e.

The makespan is the difference between completion time of last job in the group and start time of first job in the group.

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In ABC inventory analysis, which of the following is FALSE for class A items?

Select one:

a.

Tighter control of class A items (than for class B or class C items) is appropriate.

b.

It is advisable to manage Class A items using an automated computer system.

c.

Class A items together make up a higher percentage of total inventory value($) than either class B or class C items.

d.

Class A items individually may have any value ($): small, medium or high.

e.

Class A items together make up smaller percentage of inventory items than class C items.