Oilers/Plant Tenders (HHC) Civil Service Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Oilers/Plant Tenders Exam with our comprehensive quiz. Utilize flashcards and multiple choice questions with hints and explanations to excel in your civil service test. Start your preparation now!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What characteristic of refrigerant affects its interaction with lubricating oil in a freon refrigeration compressor?

The refrigerant has a low boiling point
The refrigerant is miscible with the lubricating oil
The refrigerant is heavier than air
The refrigerant is non-flammable

The correct answer is: The refrigerant is miscible with the lubricating oil

The interaction between refrigerant and lubricating oil in a freon refrigeration compressor is critically influenced by the miscibility of the refrigerant with the oil. When refrigerants are miscible with the oil, it means that they can effectively mix and dissolve within each other, which facilitates the lubrication of the compressor's moving parts. This is essential for ensuring proper function and preventing wear and tear over time. If the refrigerant and the oil are miscible, the refrigerant can help absorb heat and carry it away efficiently while also ensuring the circulating oil reaches all areas that require lubrication. This pairing helps maintain compressor efficiency and longevity. In contrast, other characteristics mentioned, such as a low boiling point, weight compared to air, or flammability, do not directly affect the lubricating capabilities or how well the refrigerant can perform its role in conjunction with the oil. Therefore, the crucial aspect of how refrigerants interact with lubricating oils is their miscibility.