Operations Management: Analysis and Improvement Methods
sd12
_Quiz_1.docx1.Question 1
Which of the following signifies a bottleneck activity within a process?
Highest Cycle Time and Lowest Flow Rate
Lowest Cycle Time and Highest Flow Rate
Lowest Cycle Time and Lowest Flow Rate
Arrange the process types layouts in correct order of increasing volume capacity and decreasing flexibility.
Job Shop, Batch, Line
Batch, Job Shop, Line
Job Shop, Line, Batch
2.Question 2
An activity is performed at four parallel processing stations and has a processing time of 40 minutes. The cycle time and flow rate for this activity are _____ and _____ respectively. (Fill in the blanks)
10 minutes, 0.1 per minute
3.Question 3
|
Activity |
Processing Time (Mins) |
Parallel Processing Stations |
|
1 |
15 mins |
1 |
|
2 |
40 mins |
4 |
|
3 |
20 mins |
2 |
|
4 |
10 mins |
2 |
|
5 |
20 mins |
1 |
What is the cycle time for Activity 4?
15 minutes
5 minutes
20 minutes
What is the cycle time for Activity 3?
15 minutes
10 minutes
5 minutes
4.Question 4
|
Activity |
Processing Time (Mins) |
Parallel Processing Stations |
|
1 |
15 mins |
1 |
|
2 |
40 mins |
4 |
|
3 |
20 mins |
2 |
|
4 |
10 mins |
2 |
|
5 |
20 mins |
1 |
What is the flow rate of Activity 1?
0.067 per minute
5.Question 5
|
Activity |
Processing Time (Mins) |
Parallel Processing Stations |
|
1 |
15 mins |
1 |
|
2 |
40 mins |
4 |
|
3 |
20 mins |
2 |
|
4 |
10 mins |
2 |
|
5 |
20 mins |
1 |
The flow time for the process is:
45 minutes
60 minutes
75 minutes
5.Question 5
|
Activity |
Processing Time (Mins) |
Parallel Processing Stations |
|
1 |
30 mins |
2 |
|
2 |
60 mins |
4 |
|
3 |
40 mins |
2 |
|
4 |
50 mins |
5 |
|
5 |
20 mins |
1 |
How many bottlenecks does the process have?
2
6.Question 6
A process consists of 10 activities whose cycle times are given in the table below:
|
Activity |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
|
Cycle Time (mins) |
1 |
2 |
3 |
4 |
5 |
5 |
4 |
3 |
2 |
1 |
What is the Process Capacity?
0.2 per minute
7.Question 7
If the available production rate for a process is 8 units/hour, what is the utilization of an activity that has available capacity of 8/hr and available time of 9/hrs?
100
90
85
7.Question 7
If the available production rate for a process is 8 units/hour, what is the available capacity for an activity whose utilization is 85%?
8.412
9.412
10.412
8.Question 8
A process has four activities with the following utilizations, which activity is the bottleneck?
|
Activity |
1 |
2 |
3 |
4 |
|
% Utilization |
60 |
85 |
100 |
90 |
2
3
4
8.Question 8
The customer demand rate for a process is 9 units/hr, a process has four activities with capacities given as follows
|
Activity |
1 |
2 |
3 |
4 |
|
Capacity (per hour) |
6 |
7 |
8 |
9 |
What is the highest implied percentage utilization among the given activities? Does any activity require more resources to meet demand?
90, No
150, Yes
150, No
9.Question 9
A bank has three tellers. During the work day customers come to the bank at an average rate of 36 customers per hour. On average a customer takes five minutes to complete their transactions. On average how many customers will there be in the bank at any given time?
3
10.Question 10
Which of the following statements is correct?
Average customer demand rate must be less than average production capacity.
Peak customer demand rate must be less than peak production capacity.
Customer demand rate may be less than equal to or greater than average production capacity.
10.Question 10
Bob is collecting competitive information on his rival Sue’s fast food restaurant. He has noticed that on average 45 customers leave Sue’s restaurant each hour. Bob has been secretly sending fake customers to Sue’s and from them he has found that on average there are nine customers in the restaurant. Bob would like to know how long customers spend on average in Sue’s restaurant, but is unable do so. On average how much time do you think Sue’s customers spend in the restaurant?
12
