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An axial compressor that generates a stagnation pressure ratio of 4.0 operates with inlet and exit stagnation temperatures of 300 K and 480 K

An axial compressor that generates a stagnation pressure ratio of 4.0 operates with inlet and exit stagnation temperatures of 300 K and 480 K

Q. An axial compressor that generates a stagnation pressure ratio of 4.0, operates with inlet and exit stagnation temperatures of 300 K and 480 K, respectively. If the ratio of specific heats (𝛾) is 1.4, the isentropic efficiency of the compressor is

(A) 0.94                                          

(B) 0.81

(C) 0.72                              

(D) 0.63

Ans: 0.81

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