A heat engine receives heat from a source at $990$ K at a rate of $\backslash (460\backslash$mathrm$\{$~kJ$\}/\backslash$mathrm$\{$s$\}\backslash )$ and rejects waste heat to the surroundings which are at a temperature of $306$ K $.$ The power output of the engine is $170$ kW

Determine the reversible power for this process.

Determine the irreversibility rate.

$\backslash [$

$\backslash$mid $\backslash$mathrm$\{$kw$\}$

$\backslash ]$

Determine the second$-$law efficiency of this engine.