Discussion
Assertion (A): Isentropic flow relations can be tabulated against Mach number alone for a given gas.
Reason (R): Every isentropic ratio depends only on the Mach number and the specific heat ratio.
Select the correct answer from the options below.
Answer: B
Both are true and the second explains the first. Once the gas is fixed, the specific heat ratio is a constant, so the stagnation-to-static ratios and the area ratio all reduce to functions of Mach number. That is exactly what makes the familiar one-column isentropic tables possible.
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