An open cycle constant pressure gas turbine uses a fuel of calorific value 40,000 kJ/kg, with the air-fuel ratio of 80 : 1 and develops a net output of 80 kJ/kg of air. The thermal efficiency of the cycle is

An open cycle constant pressure gas turbine uses a fuel of calorific v

1.	An open cycle constant pressure gas turbine uses a fuel of calorific value 40,000 kJ/kg, with the air-fuel ratio of 80 : 1 and develops a net output of 80 kJ/kg of air. The thermal efficiency of the cycle is
A.	61%
B.	16%
C.	18%
D.	21%
Answer» C. 18%

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An open cycle constant pressure gas turbine uses a fuel of calorific value 40,000 kJ/kg, with the air-fuel ratio of 80 : 1 and develops a net output of 80 kJ/kg of air. The thermal efficiency of the cycle is

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