Question

If x represents the dryness fraction of steam, the specific volume of wet steam is given by

1. x2vf
2. xvf
3. x2vg
4. xvg

Answer 1

Correct Answer - Option 4 : xvg

Concept:

Specific volume of wet steam is given by 

v = v_f + x (v_g - v_f) 

where , v = Specific volume of wet steam, v_f = Specific Volume of Saturated Water

v_g = Specific Volume of Saturated Steam, x = dryness fraction

for saturated wet steam v_f = 0

v = x v_g