Which outcome reduces power output during a turbine cycle?

💡 Explanation

Increased back pressure lowers the Rankine cycle efficiency because the turbine has to work harder against a higher exhaust pressure, therefore decreasing the overall shaft work rather than increasing power as other options suggest under optimal condition.

• What outcome results when two ocean waves collide at opposing phases?
• Which outcome occurs when rapidly compressing refrigerant gas beyond its critical point?
• Which outcome reduces strength when cyclic mechanical stress disrupts alumina grain bonds?
• Which outcome results from exceeding water's triple point?
• Which risk increases when a semiconductor laser forward current decreases?
• Which mechanism creates thrust imbalance in a spacecraft?