Question 1: Consider the following process flow diagram. There are two identical machines W1 and W2 in parallel at stage 1, machine M1 at stage 2, then a buffer (F), then machine D1 at stage 3 followed by machines G1 and G2 in parallel at stage 4. W1 G1 9 min 8 min M1 D1 6 min 5 min W2 F G2 9 min 12min (a) What is the minimum throughput time ? (b) What is the hourly capacity for each stage (round off to 2 decimal places)? (c) Identify the bottleneck stage and the process capacity. (d) Suppose you can add only one machine in parallel at the bottleneck stage. A machine with higher capacity costs more. You want to buy the least expensive machine. What should be the cycle time for the new machine so that you increase the process capacity as much as possible? Question 2: For the process shown below: M3 12 min M1 M2 M4 M6 3 min 5 min 10 min 4 min M5 15 min (a) What is the minimum TT? (b) What is the cycle time at Stage 3 in min / unit? (c) What stage is the bottleneck? Question 3: Consider the assembly process shown to the right involving two parts X and Y. Times O are in seconds. There is one worker each at M1 M2 M1, M2, R1, R2 and A1. X