GATE_AE_2027_MOCK_03_Q18 GATE 2027 Aerospace Engineering All-India Master Mock 03 (Flight Dynamics, Controls & Space Trajectories) MCQ · 1 Mark
Aerodynamics & Fluid Mechanics • Compressible Flow & Shocks • Speed of Sound & Mach Number

The speed of sound in an ideal gas depends solely on which thermodynamic state variable?

(A) Static temperature
(B) Static pressure
(C) Total pressure
(D) Gas density alone
Answer Key:
A

Step-by-Step Verified Solution

### Solution: a = sqrt(\gamma * R * T). For a given gas composition (\gamma, R fixed), sound speed depends solely on absolute static temperature T. Correct: A.
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