Aux 2 Unit 9 Quiz 5

Correct Answer:
B) Ultraviolet (UV) dye method

Explanation:
The UV dye method involves injecting a fluorescent dye into the refrigeration system. When a leak occurs, the dye escapes with the refrigerant and can be detected using a UV light, making it easy to identify leak points.

Correct Answer:
B) It emits a sound or visual alert when it senses the presence of refrigerant gas

Explanation:
An electronic leak detector is a handheld device that can detect refrigerant gases in the air. When it senses a leak, it emits a sound or visual signal, allowing technicians to pinpoint the location of the leak.

Correct Answer:
A) It works without adding any substances to the system

Explanation:
An electronic leak detector senses the presence of refrigerant gas without requiring any additives in the system, making it convenient and non-invasive.

Correct Answer:
C) It may not detect very small or slow leaks effectively

Explanation:
The bubble method is simple and cost-effective but may not be reliable for detecting very small or slow leaks, as bubbles may not form in those cases.

Correct Answer:
C) Electronic leak detector

Explanation:
An electronic leak detector can sense refrigerant gases without needing direct access to the leak point, making it ideal for hard-to-reach areas or closed systems.

Correct Answer:
B) By using ultraviolet light to reveal leaked dye at the leak site

Explanation:
In the UV dye method, a fluorescent dye is added to the system. If a leak occurs, the dye leaks out with the refrigerant. Using a UV light, the dye becomes visible at the leak point, making it easy to locate.

Correct Answer:
B) Bubble method

Explanation:
The bubble method involves applying a soapy solution to potential leak areas. If a leak is present, bubbles will form at the leak point, indicating where the refrigerant is escaping.