Question

When testing a system's ability to hold a vacuum, the technician should:

Answer 1

To test a system's ability to hold a vacuum, a technician should close any openings, remove the heat source, and seal the system to determine the mass of the sample.

Step-by-step explanation:

When testing a system's ability to hold a vacuum, the technician should follow these steps:

1. Close any hole or opening in the system that may cause air to escape.
2. Remove the heat source and allow the system to cool down, ensuring that all liquid has vaporized and only gaseous sample remains.
3. Seal the system and allow the gaseous sample to condense into liquid. Weigh the system to determine the mass of the sample.

By following these steps, the technician can accurately assess the system's ability to hold a vacuum by measuring the mass of the sample.