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Typical numerical range: reheat factor in steam turbines Identify the usual range of the reheat factor observed in practice. Choose the correct option.

Difficulty: Easy

1.02 to 1.06
1.08 to 1.10
1.2 to 1.6
1.6 to 2

Correct Answer: 1.02 to 1.06

Explanation:

Concept
Because cumulative heat drop across multiple stages slightly exceeds the single-step isentropic drop, the reheat factor is a bit greater than unity.

Typical values
For conventional steam turbines, RHF typically lies in the range 1.02 to 1.06.

Final Answer
1.02 to 1.06

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