11 Hem R134a ope enthalpy? (A) 370 JA (B) 410 (C) 450 A (D) 4HOJA 12. One kilogram of air is compressed from a volume of

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11 Hem R134a Ope Enthalpy A 370 Ja B 410 C 450 A D 4hoja 12 One Kilogram Of Air Is Compressed From A Volume Of 1 (27.92 KiB) Viewed 55 times

11 Hem R134a ope enthalpy? (A) 370 JA (B) 410 (C) 450 A (D) 4HOJA 12. One kilogram of air is compressed from a volume of 10 mund w prere of vo kPa to a volume of 0.147 m' and a pressure of 1000 kPa. Awing that the compression follows the law p = constant and n 1.2. Find the work done during the compression process (A) (B) (C) (D) 70 kJ -100 kJ 118 kJ -235 kJ 13. Steam enters an adiabatic nozzle at 1 MPa, 250 °C, and 30 m/s. At one point in the nozzle the enthalpy has dropped 40 kJ/kg from its inlet value. Determine the velocity at that point. (A) 31 m/s (B) 110 m/s (C) 250 m/s (D) 284 m/s