Aerospace Engineering > GATE 2017 > Thermodynamics
Consider a steady one dimensional flow of a perfect gas with heat transfer in a duct. The T-s diagram (shown below) shows both the static and the stagnation conditions at two locations. A and B, in the duct. At and Bt denote stagnation conditions for states A and B, respectively. It is known that (ΔT)A = (ΔT)B. MA and MB are the Mach numbers of the flow at locations A and B.
Which of the following statements is true about the flow.
A
Flow is subsonic and MA < MB.
B
Flow is supersonic and MA > MB
C
Flow is subsonic and MA > MB
D
Flow is supersonic and MA < MB

Correct : b

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