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Define: (i) Dryness fraction (ii) Critical point (iii) Triple point (iv) Degree of superheat

Mumbai university > MECH > SEM 3 > THERMO

Marks: 4M

Year: May 2014

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1) Dryness fraction is defined as the ratio of the mass of actual dry steam to the mass of steam containing it.

2) Critical point a point on a phase diagram at which two phases of a substance have the same density, and are therefore indistinguishable.

3) Triple Point is the temperature and pressure at which solid, liquid, and vapor phases of a particular substance coexist in equilibrium.

4) Degree of superheat is the numerical amount by which the temperature of a superheated vapour exceeds the saturation temperature at the same pressure.

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