HW#$4-4$ A saturated liquid$-$vapor mixture of water, called wet

steam, in a steam line at $2$MPa is throttled to $100$kPa and $125C.$

a$)$ Find the temperature $(T_1),$ specific enthalpy $(h_1)$ and quality

Lbefore the valve.

b$)$ How much does the water specific volume increase the

throttling process? Find the ratio of the specific volume after the

throttling to that before the throttling $.$

c$)$ If the cross$-$sectional area of the steam line is constant, find the

ratio of the water stream velocity after the valve to that before

the valve $(V_{{?}_{?}}\frac{2}{V_1}).$