The process of producing printed circuit boards (PCBs) involves four serial activities. Activity A has an output of 280 units per hour, activity B has an output of 60 units per hour, activity C has an output of 45 units per hour, and activity D has an output of 85 per hour. What is the bottleneck activity in the process?

Rationale

Activity C is the bottleneck activity in the process.

In a production process, the bottleneck activity is the one with the lowest output rate, as it limits the overall capacity of the system. Here, Activity C has the lowest output of 45 units per hour, making it the bottleneck that restricts the efficiency of the entire PCB production process.

A (Activity A) YOUR ANSWER

Activity A produces 280 units per hour, which is significantly higher than the other activities. Since it has the highest output, it cannot be the bottleneck, as it contributes positively to the overall capacity of the process.

B (Activity B) YOUR ANSWER

Activity B has an output of 60 units per hour, which is still much greater than that of Activity C. While it is lower than Activity A, it is not the lowest output rate in the process, thus it does not act as the bottleneck.

C (Activity C) CORRECT

Activity C, with an output of 45 units per hour, is the bottleneck activity because it has the lowest output among all four activities. This limits the overall production capacity of the PCB process, causing delays and inefficiencies.

D (Activity D) YOUR ANSWER

Activity D produces 85 units per hour, which is greater than the output of Activity C. Although it is lower than Activity A, it still contributes to the process without being a limiting factor, and therefore cannot be considered the bottleneck.

Conclusion

In summary, the bottleneck activity in a production process is defined as the stage with the lowest output capacity, which restricts the overall throughput. In this case, Activity C, with an output of 45 units per hour, clearly serves as the bottleneck, while Activities A, B, and D operate at higher outputs, allowing them to support the process without causing delays. Identifying and addressing bottlenecks is crucial for optimizing production efficiency.

Activity C is the bottleneck activity in the process.

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