A. Steam at 5 MPa, 500°C enters a nozzle steadily with a velocity of 80 mis, and it leaves at 2 MPa.

A. Steam at 5 MPa, 500°C enters a nozzle steadily with a velocity of 80 mis, and it leaves at 2 MPa and 400°C. The inlet area of the nozzle is 38 cm2, and heat is being lost at a rate of8 kJ/s. Determine (a) the mass flow rate of the steam, (b) the exit velocity of the steam, and (c) the exit area of the nozzle. B. Steam at 0.1 MPa and 150°C enters a diffuser with a velocity of 180 mis and leaves as saturated vapour at 120°C with a velocity of 50 mis. The exit area of the diffuser is 0.08 m2• Determine (i) the mass rate of steam (ii) the rate of heat transfer and (iii) the inlet area of the diffuser.

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