While Examining a R-134a System Through the Sight Glass,the Refrigerant

question 65

Multiple Choice

While examining a R-134a system through the sight glass,the refrigerant appears to be cloudy.Which of the following would probably be the cause?

• A) low refrigerant level
• B) high refrigerant level
• C) contamination caused by desiccant breakdown
• D) undercharge of oil in the system

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Definitions:

Active Portfolio

An Active Portfolio is a collection of investments actively managed by fund managers or investors, regularly making buy, sell, and hold decisions in an attempt to outperform the benchmark index.

Abnormal Returns

Returns on a stock or portfolio that differ significantly from the expected return based on the market or certain benchmarks.

Mean-Variance Theory

A financial model that analyzes investments by examining their expected returns (mean) against their risk (variance) to select the most efficient portfolio.