Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?
Correct answer: A. Decreases
- A. Decreases
- B. Increases
- C. Remain same
- D. May increase or decrease
Explanation
The latent heat of vaporisation falls as pressure rises because the saturated-liquid and saturated-vapour states become more alike near the critical point. It approaches zero at the critical pressure.
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