Steam at 15 bar and 200°C is supplied to a
convergent-divergent nozzle against a back pressure of 4 bar. Expansion is
supersatuated up to the throat and the nozzles are rectangular in shape, its
width being 2.5 times the breadth. For a mass-flow rate of0.3 kg/s, find (i)
Dimensions of the nozzle at the exit, (ii) Degree
ofundercooling and supersaturation, (iii) Increase in entropy.
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