Air enters the compressor $($pressure ratio $10)$ and the ideal Brayton cycle turbine at $16\mathrm{.}85\backslash$deg C and $826\mathrm{.}85\backslash$deg C respectively. Specific heats change with temperature. Draw the thermodynamic cycle and identify. $1)$ the temperature at the compressor outlet,

$2)$ the reason for project return,

$3)$ the thermal efficiency of the cycle