railway RRB JE (CBT I + CBT II) Mock Test 2024 Thermodynamics Properties of Pure Substances Enthalpy-Entropy Chart or Mollier Diagram
The following data refers to a pure substance at a pressure of 0.5 MPa. T (saturation) = 151.8°C; hg = 2748.1 kJ/kg: hf = 640.2 kJ/kg.
Which of the following is true for this substance?
1
At a pressure of 0.5 MPa and temperature of 160°C, the substance will be in compressed liquid state.
2
At a pressure of 0.5 MPa and enthalpy of 2900 kJ/kg, the substance will be in superheated state.
3
At a pressure of 0.5 MPa and temperature of 250°C, the substance will be in liquid-vapor mixture region.
4
At a pressure of 0.5 MPa and specific enthalpy of 2800 kJ/kg, the substance will be in liquid-vapour mixture region.