C&G 2079-11 F-Gas Category I Practice Questions - City & Guilds 2079 Level 2 Award In F-Gas & ODS Regulations (Category I) Exam

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On a pressure-enthalpy (p-h) diagram, the throttling process through the expansion valve is represented by which type of line?

A horizontal line of constant pressure A vertical line of constant enthalpy A curved line following the saturation dome A diagonal line of constant entropy

Correct Answer:

A vertical line of constant enthalpy

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