Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entr

Question

Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg . K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

Options:

A . Superheated vapour

B . Partially condensed vapour with quality of 0.9

C . Saturated vapour

D . Partially condensed vapour with quality of 0.1

Answer: Option A

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