Saturated steam at P1=25 bar expands adiabatically through a throttling valve to P2=4 bar. If the quality of the steam at the valve inlet is x1=0.9 what is the quality x2 at the valve outlet Please respond ASAP

... Moving to another question will save this response. Question 7 Compressed air with a flowrate of 8 kg/min flows through a two-stage turbine and heat exchanger system as follows: • At the entrance to the system (point 1), the pressure of the air is 8 bar and the temperature of the air is 359 K. • From 1-2 the air passes through a heat exchanger which increases its temperature to 922 K. • From 2-3 the air passes through a turbine, with a pressure ratio of 3 (i.e. P₂/p₂=3). This first turbine has an isentropic efficiency of 65%. • From 3-4 the air passes through a second heat exchanger, which increases its temperature back up to 922 K. • From 4-5 the air passes through a second turbine with a pressure ratio of 3 and an isentropic efficiency of 80%. The properties of air are: cp = 1.005 kJ/kgk, cv = 0.718 kJ/kgK, R = 0.287 kJ/kgK, and y= 1.4. Select the correct value for each of the following values: ₂) a. The heat transfer to the air in the first heat exchanger (i.e. ₁) i in kW: b.…

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A supply line carries a two-phase liquid–vapour mixture of steam at 450 psi. A small fraction of the flow in the line is diverted through a throttling calorimeter and exhausted to the atmosphere at 20 psi. The temperature of the exhaust steam is measured as 350°F. Determine the quality of the steam in the supply line.   Select one: a. 95.7% b. 98% c. 92% d. 100%