Dry saturated steam can be converted into super heated steam by____________________?
Correct answer: B. Passing it through a pressure reducing valve
- A. Increasing its cross-sectional area of flow
- B. Passing it through a pressure reducing valve
- C. Forcing it downwards through a vertical tube
- D. None of these
Explanation
A pressure-reducing valve produces throttling, in which enthalpy remains approximately constant. At the lower pressure, the original saturated-steam enthalpy lies in the superheated region, so the steam becomes superheated.
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