USCG Exam PracticeThermodynamics and heat exchangers
Which temperature scale must be used when performing gas-law and thermodynamic cycle calculations?
- A. Fahrenheit
- B. Celsius
- ✓ Absolute (Rankine or Kelvin)Correct
- D. Gauge temperature
Why C is correct
DOE-HDBK-1012 §1-1 states that absolute temperature must be used in gas-law and cycle calculations. The Rankine and Kelvin scales are the absolute scales; Fahrenheit and Celsius are relative scales referenced to arbitrary fixed points, not to absolute zero.
Cited:DOE-HDBK-1012 §1-1