CPIM Practice Exam

What is the most accurate description of queue time?

1. The time a job remains at a workstation

2. The duration a job waits for materials

3. The time taken for jobs to move between operations

4. The total cycle time of a production run

The correct answer is: The time a job remains at a workstation

Queue time refers specifically to the time a job or task remains waiting at a workstation before it begins processing. This is a crucial concept within operations management as it directly impacts the efficiency of the production system. An accurate understanding of queue time helps in evaluating and improving workflow and resource allocation, which can lead to reduced lead times and improved productivity. When assessing the meaning of queue time, it is essential to differentiate it from other time measurements in production processes. For example, the duration a job waits for materials pertains more to material handling and availability rather than the job's wait time at a specific operation. The time taken for jobs to move between operations relates to transportation or transfer time, not the time spent idle at any particular station. Additionally, the total cycle time encompasses all elements of production, including processing time, setup, transport, queue time, and any delays, making it a broader measurement than queue time alone. Thus, the identification of queue time as the period a job stays unprocessed at a workstation aligns correctly with its definition in the context of production systems.