Question

1. What are the two ways work center can be loaded? What are the two techniques in loading?

2. Name five priority sequencing rules. Explain how each works to assign jobs

3. Explain the term flow time and lateness

4. What are the advantages to finite capacity scheduling?

Answer 1

Answer:- The two methods which can be used to load the working centers are given as below:-

Infinite loading

Finite Loading.

In case of infinite loading, jogs are allocated to different work centers irrespective of the capacity of those work centers. In case of infinite loading approach, different priority rules are used. Depending upon the priority rule selected, the jobs are assigned on the machines. This is termed as vertical loading.

In case of finite loading projects, the actual start time and stop time of every job is estimated in different work centers. This method takes into account the capacity of every work center and makes a comparison of processing time in order to make sure that process time remains under the capacity.

Answer:-

Five priority sequencing rules are illustrated as below:

         First come, first served (FCFS); or First in, first out (FIFO): In this method, different jobs are arranged as per the time of arrival at the work centers.

         Earliest due date (EDD): Jobs are arranged as per the due dates. The jobs with shorter due dates are given highest priority.

         Shortest processing time (SPT): In this, the job which has the shortest processing time will be given higher priority.

         Longest processing time (LPT): In this, the job which has the longest processing time will be given higher priority.

         Critical ratio (CR): In this as per the increasing critical ratio, the jobs are arranged.

Answer:-

Flow time can be defined as the total amount of time a certain flow unit passes in a certain business activity starting from beginning to the end. This is also termed as processing time.

Lateness can be seen as the excess time more than the allocated or budgeted time which is required by the job in order to get processed.

Answer:- The main advantage of finite capacity scheduling is that all the limitations of rule-based systems are overcome by facilitating the users with graphical interaction computing