The velocity of a gas flowing through a duct is 300 m/s; its temperatu – McqOptions

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1.	The velocity of a gas flowing through a duct is 300 m/s; its temperature is 127°C: Gas constant R = 0.25 kJ/kg K, the ratio of specific heat is Cp /Cy = γ is 1.6. What is the value of Mach number?
A.	0.7
B.	0.72
C.	0.75
D.	0.77
Answer» D. 0.77

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