Project ForgeFluid Mechanics
Bernoulli's Equation & Flow
GATE 2021
Medium
An object is moving with a Mach number of 0.6 in an ideal gas environment, which is at a temperature of 350 K. The gas constant is 320 J/kg.K and ratio of specific heats is 1.3. The speed of object is ___ m/s (round off to the nearest integer).
228.95 m/s(± 2 accepted)
Explanation
Speed of sound c = √(γRT) = √(1.3×320×350) = √145600 ≈ 381.6 m/s. Speed of object V = M·c = 0.6×381.6 ≈ 228.95 m/s.
Source: GATE ME 2021 Session 2 (ME-2) (2021)
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