Mechanical Engineering > GATE 2013 SET-3 > Gas Power Cycles
In a simple Brayton cycle, the pressure ratio is 8 and temperatures at the entrance of compressor and turbine are 300 K and 1400 K, respectively. Both compressor and gas turbine have isentropic efficiencies equal to 0.8. For the gas, assume a constant value of cp (specific heat at constant pressure) equal to 1 kJ/kgK and ratio of specific heats as 1.4. Neglect changes in kinetic and potential energies.

The thermal efficiency of the cycle in percentage (%) is
A
24.8
B
38.6
C
44.8
D
53.1

Correct : a

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Brayton cycle efficiency GATE Mechanical Engineering 2013 thermal efficiency calculation isentropic efficiency specific heat at constant pressure ratio of specific heats mechanical engineering gate Brayton cycle problems thermodynamics gate questions

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