Which of the following actions is consistent with the use of pure level strategy?
A) use inventory to meet demand requirements
B) use overtime to meet higher-than-average demand requirements
C) vary production levels to meet demand requirements
D) vary work force to meet demand requirements
E) none of the above
The smaller the percentage established for allowances,
A) the closer is normal time to standard time
B) the closer is average observed time to normal time
C) the larger is the performance rating factor
D) the larger is the adequate sample size
E) the larger is the number of observations in the work sampling
A big advantage of a process-oriented layout is
A) its flexibility in equipment and labor assignments
B) its low cost
C) the simplified scheduling problem presented by this layout strategy
D) the ability to employ low-skilled labor
E) its high equipment utilization
A high value for which of the following signals that an operations manager is excelling?
A) efficiency
B) utilization
C) effective capacity
D) net present value
E) none of the above
A waiting-line system that meets the assumptions of M/M/1 has » = 1, ¼ = 4. For this
system, Po is __________ and utilization is __________.
A) 0.75; 0.25
B) 0.80; .20
C) -3; -4
D) 3; 4
E) none of these
A linear programming problem has three constraints:
2X + 10Y =<1004X + 6Y =<1206X + 3Y =<90
What is the largest quantity of X that can be made without violating any of these
constraints?
A) 50
B) 30
C) 20
D) 15
E) 10
The project organization works best when which of the following conditions are
satisfied?
I. Work can be defined with a specific goal and deadline.
II. The job is typical and familiar to the existing organization.
III. The work contains interrelated tasks requiring specialized skills
IV. The project is temporary but unimportant to long-term organizational success
V. The project cuts across organizational lines.
A) I,II,III,IV,V
B) None of the above conditions need to be satisfied
C) I,III,V
D) I,II,III,V
E) I,III,IV,V
Which of the following statements comparing learning curve rates (L) to improvement
rates is true?
A) The learning rate is the same as the improvement rate.
B) The learning rate is a decimal value while the improvement rate is a percentage.
C) A 90 percent learning curve corresponds to a 10 percent rate of improvement.
D) Learning rates apply to labor only, while improvement rates apply to all resources.
E) “Learning rates” is American usage, while “improvement rates” is British.
Use Johnson’s rule to determine the optimal sequencing for the five jobs to be processed
on two machines in a fixed order (Machine 1 before Machine 2). The processing times
in hours are given in the table below.
a. What is the optimal sequence?
b. What is the total flow time for this sequence?
c. Which job is the first to be scheduled? Is it scheduled to be the first job or the last?
Explain.
A run test is used
A) to examine variability in acceptance sampling plans
B) in acceptance sampling to establish control
C) to examine points in a control chart to check for natural variability
D) to examine points in a control chart to check for nonrandom variability
E) none of the above
“Making it right the first time” is
A) an unrealistic definition of quality
B) a user-based definition of quality
C) a manufacturing-based definition of quality
D) a product-based definition of quality
E) the definition proposed by the American Society for Quality
Which of the following combinations of constraints has no feasible region?
A) X + Y >= 15 and X – Y =<10
B) X + Y >=5 and X >= 10
C) X >= 10 and Y >= 20
D) X + Y >= 100 and X + Y =< 50
E) All of the above have a feasible region.
An operation in a television factory has an average observed time of 6 minutes. The
performance rating of the worker timed was estimated at 90%. Practice in this
department is to allow 8% for the constant allowances. Currently, there is no variable
allowance.
a. Find the normal time for the operation.
b. Compute the standard time for the operation.
c. Recompute the standard time if a variable allowance of 8% is factored in.
A queuing model which follows the M/M/1 assumptions has » = 3 and ¼ = 2. The
average number in the system is
A) -3
B) 3
C) 0.667
D) 150 percent
E) growing without limit, since » is larger than ¼.
Which of the following is true for degenerate problems?
A) They do not contain a feasible solution.
B) They cannot contain an optimal solution.
C) Supply is greater than demand.
D) Demand is greater than supply.
E) None of the above
When a sample measurement falls inside the control limits, it means that
A) each unit manufactured is good enough to sell
B) the process limits cannot be determined statistically
C) the process output exceeds the requirements
D) if there is no other pattern in the samples, the process is in control
E) the process output does not fulfill the requirements
The local convenience store makes personal pan pizzas. Currently, their oven can
produce 50 pizzas per hour. It has a fixed cost of $2,000, and a variable cost of $0.25
per pizza. The owner is considering a bigger oven that can make 75 pizzas per hour. It
has a fixed cost of $3,000, but a variable cost of $0.20 per pizza.
a. At what quantity do the two ovens have equal costs?
b. If the owner expects to sell 9,000 pizzas, should he get the new oven?
Why is equipment utilization in process-focused service industries often low?
Explode the following Bill of materials assuming 1 A is to be made. If there are 20 of
every item except A in on-hand inventory how many As can be assembled?
What is methods analysis?
Identify some ethical principles as applied to outsourcing.
__________ is the number-one reason driving outsourcing for many firms.
__________ consists of all activities involved in keeping a system’s equipment in
working order.
In what specific areas does the layout decision establish a firm’s competitive priorities?