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Improving steam turbine efficiency: pick valid method(s) Common cycle/plant modifications to raise efficiency. Choose the best option.

Difficulty: Easy

Reheating of steam
Regenerative feed heating
Binary vapour (combined) plant
Any one of these (all improve efficiency)

Correct Answer: Any one of these (all improve efficiency)

Explanation:

Concept/Approach

Reheat reduces moisture at turbine exhaust and increases mean temperature of heat addition.
Regenerative feed heating increases boiler feedwater temperature, boosting cycle efficiency.
Binary/combined vapour plants (e.g., steam with topping/ bottoming) raise overall efficiency.

Final Answer
Any one of these — each method improves turbine/plant efficiency.

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