The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be_____________________?
Correct answer: C. 1.4
- A. 0.8
- B. 1
- C. 1.4
- D. 1.8
Explanation
For air and many common gases below about 500°C, the heat-capacity ratio gamma = cp/cv is commonly approximated as 1.4. This constant-property approximation is widely used in gas-flow and compression calculations.
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