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value: 15.00 points Problem 16-10 The times required to complete each of eight jobs in a two-machine flow shop are shown in the table that follows. Each job must follow the same sequence, beginning with machine A and moving to machine B. TIME (hours) Job Machine A Machine B a 16 5 b 3 13 c 9 6 d 8 7 e 2 14 f 12 4 g 18 14 h 20 11 a. Determine a sequence that will minimize makespan time. The sequence is . b. Find machine B’s idle time. Idle time . b. Determine idle time of center 2, assuming no other activities are involved. Idle time 3. value: 15.00 points Problem 16-14 The production manager must determine the processing sequence for seven jobs through the grinding and deburring departments. The same sequence will be followed in both departments. The manager’s goal is to move the jobs through the two departments as quickly as possible. The foreman of the deburring department wants the Shortest processing time rule to be used to minimize the work-in-process inventory in his department. PROCESSING TIME (hours) Job Grinding Deburring A 3 6 B 2 4 C 1 5 D 4 3 E 9 4 F 8 7 G 6 2 a. Prepare a schedule using Shortest processing time for the grinding department. The sequence is . b-1. What is the flow time in the grinding department for the Shortest processing time sequence? Grinding flow time . c-2. What flow time will result for the grinding department? Grinding flow time Sequence for Shortest processing time Sequence for Earliest due date Sequence for Critical ratio a-2. For each method, find the average job flow time and the average job tardiness. (Round your answers to 2 decimal places.) First Come, First Served Shortest Processing Time Earliest Due Date Critical Ratio Average flow time . b. What will be the average job tardiness? (Round your answer to 2 decimal places.) Average job tardiness new average job tardiness is [removed] minutes. ask your instructor a question references ebook & resources [removed] minutes .

Education

18
14
h
20
11
a.
Determine a sequence that will minimize makespan time.
The sequence is .
b.
Find machine B’s idle time.
Idle time
.
b.
Determine idle time of center 2, assuming no other activities are
involved.
Idle time
3.

value:
15.00 points
Problem 16-14
The production manager must determine the processing
sequence for seven jobs through the grinding and deburring
departments. The same sequence will be followed in both
departments. The manager’s goal is to move the jobs through
the two departments as quickly as possible. The foreman of the
deburring department wants the Shortest processing time rule to
be used to minimize the work-in-process inventory in his
department.
PROCESSING TIME
(hours)
Job
Grinding
Deburring
A
3
6
B
2
4
C
1
5
D
4
3
E
9
4
F

8
7
G
6
2
a.
Prepare a schedule using Shortest processing time for the
grinding department.
The sequence is
.
b-1.
What is the flow time in the grinding department for the
Shortest processing time sequence?
Grinding flow time
.
c-2.
What flow time will result for the grinding department?
Grinding flow time
Sequence for Shortest processing time
Sequence for Earliest due date
Sequence for Critical ratio
a-2.
For each method, find the average job flow time and the average
job tardiness.
(Round your answers to 2 decimal places.)

First Come, First Served
Shortest Processing Time
Earliest Due Date
Critical Ratio
Average flow time
.
b.
What will be the average job tardiness?
(Round your answer to 2 decimal places.)
Average job tardiness
new average job tardiness is
[removed]
minutes.
ask your instructor a question
references
ebook & resources
[removed] minutes

Similar to value15.00 pointsProblem 16-10The times required to com.docx

Problem 6-2 A manager wants to assign tasks to workstations as efficiently as possible, and achieve an hourly output of 331/3 units. Assume the shop works a 60-minute hour. Assign the tasks shown in the accompanying precedence diagram (times are in minutes) to workstations using the following rules: a. In order of most following tasks. Tiebreaker: greatest positional weight. Work Station Tasks I II III IV b. In order of greatest positional weight. Work Station Tasks I II III IV c. What is the efficiency? (Round your answer to 2 decimal places. Omit the "%" sign in your response. ) Efficiency % Problem 6-3 A manager wants to assign tasks to workstations as efficiently as possible, and achieve an hourly output of 4 units. The department uses a working time of 56 minutes per hour. Assign the tasks shown in the accompanying precedence diagram (times are in minutes) to workstations using the following rules: a. In order of most following tasks. Tiebreaker: greatest positional weight. Work Station Tasks I II III IV b. In order of greatest positional weight. Work Station Tasks I II III IV c. What is the efficiency? (Round your answer to 2 decimal places. Omit the "%" sign in your response. ) Efficiency % Problem 6-8 A shop works a 400-minute day. The manager of the shop wants an output of 200 units per day for the assembly line that has the elemental tasks shown in the table. Do the following: Task Immediate Predecessor Task Time (minutes) a - 0.5 b a 1.4 c a 1.2 d a 0.7 e b, c 0.5 f d 1.0 g e 0.4 h g 0.3 i f 0.5 j e, i 0.8 k h, j 0.9 m k 0.3 b. Assign tasks according to the most following tasks rule. Work Station Following Tasks 1 2 3 4 5 c. Assign tasks according to the greatest positional weight rule. Work Station Following Tasks I II III IV V d. Compute the balance delay for each rule. Which one yields the better set of assignments in this instance? (Omit the "%" sign in your response.) Balance delay: both part b and c are % Problem 6-18 For the set of tasks given below, do the following: Task Task Time (seconds) Immediate Predecessor A 45 - B 11 A C 9 B D 50 - E 26 D F 11 E G 12 C H 10 C I 9 F, G, H J 10 I 193 Assign tasks to stations for a desired output of 500 units in a 7-hour day to balance the line using the longest operation time heuristic. Break ties with the most following tasks heuristic. Calculate the percentage idle time for the line. Use the actual bottleneck cycle time in your calculation. (Round your percentage of idle time to 2 decimal places. Omit the "%" sign in your response.) Work Station Task I II III IV Percentage of idle time % Problem 7-1 An analyst has timed a metal-cutting operation for 50 cycles. The average time per cycle was 10.9 minutes, and the standard deviation was 1.20 minutes for a worker with a performance rating of 139 percen.

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