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Q1 (a)0.5 kg of water is contained in a rigid vessel at a temperature of 125oC...

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Mechanical Engineering

Q1 (a)0.5 kg of water is contained in a rigid vessel at atemperature of 125oC and a pressure of 232.1 kPa. The specificenthalpy is 1050 kJ•kg-1. Which of the following could also becorrect?

(A) v = 0.001065 m3 •kg-1 (B) v = 0.7706 m3 •kg-1 (C) x = 0.24(D) x = 0.5

(b).0.020 kg of air, initially at 20oC is compressed in aperfectly insulated and sealed cylinder which is fitted with amoveable piston. A mean force of 1000 N was applied to the pistonas it moved through a displacement of 100 mm to compress the gas.The final temperature of the gas after compression will be?

(A) 27oC (B) 20oC (C) 30oC (D) 13oC

(c). 0.8857 m3 of H2O is stored in a rigid vessel at 200 kPa,125oC. Is this?

(A) Sub-cooled liquid ? (B) Saturated liquid ? (C) Saturatedvapour ? (D) Superheated vapour ?

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