Which method is a valid approach for testing a component?

The answer encompasses various methods used to test a component effectively, each serving a distinct purpose in the testing process. Visual inspection is fundamental for identifying obvious signs of damage or wear in components, such as cracks, discoloration, or corrosion. This non-invasive approach allows technicians to catch issues that might not require further testing.

Functional testing is another critical method, as it evaluates whether the component operates according to its specifications. This testing verifies that the component performs its intended function under normal operating conditions, ensuring reliability and safety within the overall system.

Component swapping, often referred to as substitution testing, involves replacing a questioned component with a known good one to determine if the original part is faulty. This method is particularly effective for troubleshooting by isolating the problem and confirming whether the issue lies within the specific component or elsewhere in the system.

Combining these approaches provides a comprehensive means of assessing component performance and integrity, making them all valid methods for testing. Each method contributes to a robust testing strategy, ensuring that components are reliable and safe for use in electric motor control systems.