$($Elliott P$2\mathrm{.}14)$ Saturated steam at $660F$ is adiabatically throttled through a

valve to atmospheric pressure in a steady$-$state flow process. Estimate the

outlet quality of the steam. $($ANS$.q=0\mathrm{.}96.$ Note: steam tables in US custom$-$

ary $($American engineering$)$ units can be found online$)$