Question

the grinding should be finished before deburring. each shop has dedicated workers. assuming that these are the only jobs in hand at the facility. using johnson's rule find the order in which the job should be carried out to minimize the make-span. question 6 options: a) dbca b) bdac c) dcba d) acbd

Answer 1

Johnson's rule is used to determine the order of jobs to minimize make-span. In this case, the correct order is 'dbca'.

Step-by-step explanation:

The question is asking us to determine the order in which the jobs should be carried out to minimize the make-span, using Johnson's rule. Johnson's rule is a scheduling algorithm used to optimize the order of jobs in a production process.

Johnson's rule works by identifying the job with the shortest processing time and scheduling it first. Then, the job with the second shortest processing time is scheduled next, but its position depends on the setup time required for the first job. This process continues until all jobs have been scheduled.

In this case, the jobs are 'grinding' and 'deburring', and the order determined by Johnson's rule is 'dbca'. Therefore, the correct answer is option a) 'dbca'.