ESCO Air Conditioning Practice Exam

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A compound pressure gauge measures

Absolute pressure
High pressure only
Pressure and temperature
Pressure and vacuum

The correct answer is: Absolute pressure

A compound pressure gauge measures absolute pressure. Absolute pressure is the total pressure exerted by a fluid, including atmospheric pressure. Unlike gauge pressure, which measures pressure relative to atmospheric pressure, absolute pressure accounts for atmospheric pressure as a baseline. This type of pressure measurement is essential in various applications, especially when precise pressure values are required.