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  1. A pure substance at 8 MPa and 400°C is having a specific internal energy of 2864 kJ/kg and a specific volume of 0.03432 m3/kg. Its specific enthalpy (in kJ/kg) is, ________.
    1. 3239
    2. 3139
    3. 1339
    4. 3339
Correct Option: B

h = u + pv
h = 2864 + (8000 kPa) × (0.03432)
= 2864 + 274.56
= 3138.56
= 3139



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