operations management question 5
Sequence the jobs shown below by using a Gantt chart. Assume that the move time between machines is one hour. Sequence the jobs in priority order 1, 2, 3, 4.
| Job Work Center/Machine HoursDue Date (days) | ||
| 1 | A/3, B/2, C/2 | 3 |
| 2 | C/2, A/4 | 2 |
| 3 | B/6, A/1, C/3 | 4 |
| 4 | C/4, A/1, B/2 | 3 |
- Using finite capacity scheduling, draw a Gantt chart for the schedule (Marks 0.5)
- What is the makespan?
- How much machine idle time is there?
- How much idle time (waiting time) is there for each job?
- When is each job delivered?
- Which department is the bottleneck?
- Calculate the machine utilization?
Question 2:
A public accounting firm requires the following activities
for an audit:
| Activity | Immediate Predecessor | Activity time |
| A | – | 3 |
| B | A | 2 |
| C | – | 5 |
| D | B, C | 2 |
| E | A | 4 |
| F | B, C | 6 |
| G | E, D | 5 |
- Draw a network for this project?
- Make a forward pass and a backward pass to determine ES, LS, EF, and LF?
- What are the critical path?
** A clearer version of the table with attachments