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Consider the following 2 job and M-Machine problem
Job1 Lathe (2 hours) → Milling (1 hour)→→Drilling (4hours)
Job 2 Milling (1 hour)→ Lathe (3 hours) → Drilling (3 hours)
Find the make span.
- a)10
- b)10
Correct answer is between ' 10, 10'. Can you explain this answer?
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Verified Answer
Consider the following 2 job and M-Machine problemJob1 Lathe (2 hours...
Make span = 10 hours
Most Upvoted Answer
Consider the following 2 job and M-Machine problemJob1 Lathe (2 hours...
Make span refers to the total time required to complete all the jobs in a given scheduling problem. In this case, we have two jobs and three machines. Let's analyze the given problem to find the make span.
Job 1:
The first job starts with the lathe machine, which takes 2 hours to complete. After that, it moves to the milling machine, which takes 1 hour. Finally, it goes to the drilling machine, which requires 4 hours to finish.
Job 2:
The second job begins with the milling machine, which takes 1 hour. Then it moves to the lathe machine, which requires 3 hours. Lastly, it goes to the drilling machine, which takes 3 hours to complete.
To find the make span, we need to consider the longest path or the maximum time required to complete all the jobs.
Lathe Machine:
Both jobs require the lathe machine, but the lathe machine in job 2 takes 3 hours, which is longer than the 2 hours required in job 1. So, we consider the 3 hours.
Milling Machine:
Job 1 requires 1 hour on the milling machine, while job 2 also requires 1 hour. Hence, we consider the maximum time, which is 1 hour.
Drilling Machine:
Job 1 requires 4 hours on the drilling machine, while job 2 requires 3 hours. Here, we consider the maximum time, which is 4 hours.
Now, we add up the maximum times for each machine to find the make span:
Make span = Lathe + Milling + Drilling
= 3 hours + 1 hour + 4 hours
= 8 hours
Therefore, the make span for the given problem is 8 hours.
The correct answer is not between 10 and 10 (as mentioned in the question), but rather the make span is 8 hours.
Job 1:
The first job starts with the lathe machine, which takes 2 hours to complete. After that, it moves to the milling machine, which takes 1 hour. Finally, it goes to the drilling machine, which requires 4 hours to finish.
Job 2:
The second job begins with the milling machine, which takes 1 hour. Then it moves to the lathe machine, which requires 3 hours. Lastly, it goes to the drilling machine, which takes 3 hours to complete.
To find the make span, we need to consider the longest path or the maximum time required to complete all the jobs.
Lathe Machine:
Both jobs require the lathe machine, but the lathe machine in job 2 takes 3 hours, which is longer than the 2 hours required in job 1. So, we consider the 3 hours.
Milling Machine:
Job 1 requires 1 hour on the milling machine, while job 2 also requires 1 hour. Hence, we consider the maximum time, which is 1 hour.
Drilling Machine:
Job 1 requires 4 hours on the drilling machine, while job 2 requires 3 hours. Here, we consider the maximum time, which is 4 hours.
Now, we add up the maximum times for each machine to find the make span:
Make span = Lathe + Milling + Drilling
= 3 hours + 1 hour + 4 hours
= 8 hours
Therefore, the make span for the given problem is 8 hours.
The correct answer is not between 10 and 10 (as mentioned in the question), but rather the make span is 8 hours.
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Consider the following 2 job and M-Machine problemJob1 Lathe (2 hours) → Milling (1 hour)→→Drilling (4hours)Job 2 Milling (1 hour)→ Lathe (3 hours) → Drilling (3 hours)Find the make span.a) 10b) 10Correct answer is between ' 10, 10'. Can you explain this answer?
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