SSC JE Mechanical Engineering 2012 Paper

Question : 194 of 200

Marks: +1, -0

The isentropic expansion of initially superheated steam through the nozzle may approximately be given by the equation

Solution:

Superheated steam work as a gas so it follow the law

PV^{ γ}=C\;\;\;\;\;\;∵γ=1.4

for air
So, it follows

PV^{ 1.3}=C ,

1.3 is the most nearest to 1.4.

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