Which metric represents the rate at which production can be processed within system constraints?

• A. Lead time
• B. Cycle time
• C. Capacity
• D. Throughput

Answer: (D)

Throughput is the actual rate at which the production system delivers finished units, given the constraints of the process. It reflects how fast you can move product through the line in real conditions, and it’s typically limited by the bottleneck—the slowest stage that sets the maximum sustainable rate. This is different from lead time, which is the total time from start to finish for a job, and from cycle time, which is the time to complete one unit or batch. It’s also not the maximum potential the system could achieve (capacity) but the real, realized rate under current constraints. So the metric that measures how quickly production can be processed within those constraints is throughput.