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The stagnation temperature of a flow is the temperature reached when the gas is brought to rest

  • A.Isothermally
  • B.At constant pressure
  • C.At constant density
  • D.Adiabatically

Answer: D

Stagnation temperature is defined by an adiabatic deceleration to rest, so it measures the total energy of the flow per unit mass. It does not require the process to be reversible, which is why stagnation temperature is conserved across a shock wave while stagnation pressure is not.

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