Question

With increase in pressure ratio in Brayton cycle the net work output

• A. increases
• B. decreases
• C. initially increases reaches to a maximum and then decreases
• D. initially decreases and then increases

Hint:

The net work output of a Brayton cycle is maximized at a specific pressure ratio beyond which the work output starts decreasing

Answer 1

The Correct Option is C

For a Brayton cycle, as the pressure ratio increases, efficiency initially rises to an optimum point before decreasing due to the escalating compression work. Concurrently, the net work output first increases, then declines after reaching a maximum value.