Question

Which of the following is the correct relationship between γ and Cv?

(a) Cv=R\(\frac{\gamma}{\gamma-1}\)

(b) Cv=\(\frac{R}{\gamma-1}\)

(c) Cv=\(\frac{R}{\gamma+1}\)

(d) Cv=R\(\frac{\gamma}{\gamma\mp1}\)

This question was addressed to me during an interview.

Question is from Measurement of Airflow Characteristics in chapter Atmosphere and Air Data Measurement of Aircraft Performance

Answer 1

Correct option is (b) Cv=\(\frac{R}{\gamma-1}\)

The explanation: Cv=\(\frac{R}{\gamma-1}\) is the correct relationship between γ and Cv where R= characteristic gas constant, γ is the ratio of specific heat at constant pressure to that of specific heat at constant volume and Cv is the specific heat at constant volume.