Air enters an adiabatic nozzle at 300 kPa, 500 K with a velocity of 10 m/s. It leaves the nozzle at 100 kPa with a velocity of 180 m/s. The inlet area is 80cm2. The specific heat of air cp is 1008 J/kgK
The exit area of nozzle in cm2 is
A
90.1
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B
56.3
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C
4.4
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D
12.9
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Solution
The correct option is D 12.9 (d)
Continuity equation for compressible flow ρA1V1=ρ2A2V2
and, A1V1v1=A2V2v2