Refrigerant$-134$a at $950$ kPa is throttled to a temperature of $-25C$ and a quality of $0\mathrm{.}5.$ If the velocity at the inlet and outlet remains constant at $10\frac{m}{s},$ determine $($a$)$ the quality at the inlet and $($b$)$ the ratio of exit$-$to$-$inlet area. $($c$)$ What$-$if scenario: What would the inlet quality and ratio of exit$-$to$-$inlet areas be if the inlet velocity was $20\frac{m}{s}?$