Air is drawn in a compressor at the rate of 0.8 kg/s at a pressure of 1 bar and temperature of 20 °C, and is delivered at a pressure of 10 bar and temperature of 90 °C. This air delivery is through an exit valve of area 2 × 10–3 m2. If R is 287 J/kg-K, the exit velocity of the air is
1
41.7 m/s
2
35.8 m/s
3
29.7 m/s
4
27.3 m/s