Power Electronics, Motors & Drives worked example

Motor Efficiency Test Workload at 68% target efficiency test coverage: a worked example

This worked example runs the motor efficiency test workload numbers for a tougher week than the baseline: 68% target efficiency test coverage instead of the typical 95%. Calculate the share of motors requiring efficiency test from motors scheduled for test, total motors built, and the target test coverage.

The inputs for this scenario

  • Motors scheduled for efficiency test: 8 motors (held at the documented default)
  • Total motors built or released: 250 motors (held at the documented default)
  • Target efficiency test coverage: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Motor efficiency test workload rate = motors scheduled for efficiency test ÷ total motors built or released × 100.
  • Motor efficiency test coverage works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Efficiency test coverage gap works out to 64.8 points at these inputs.
  • Motors scheduled for efficiency test works out to 8 count at these inputs.
  • Total motors built or released works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target efficiency test coverage sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • Use it when setting a sampling plan, staffing the efficiency-test cell, or auditing whether actual test coverage meets the quality target. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Motor efficiency test coverage: 3.2 % (headline result)
  • Efficiency test coverage gap: 64.8 points
  • Motors scheduled for efficiency test: 8 count
  • Total motors built or released: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Motor Efficiency Test Workload calculator, set target efficiency test coverage to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.