Section: Thermodynamics | Marks: 2
Consider steady flow of air ($c_p = 1005\text{ J/kg}\cdot\text{K}$) in an adiabatic passage. Air enters the passage at $100\text{ kPa}$, $500\text{ K}$ at a velocity of $150\text{ m/s}$ and exits the passage at $510\text{ K}$. Assume air to be an ideal gas and neglect gravitational effects. The passage is a
- A. diffuser, and the velocity at the exit is approximately 49 m/s
- B. diffuser, and the velocity at the exit is approximately 79 m/s
- C. nozzle, and the velocity at the exit is approximately 179 m/s
- D. nozzle, and the velocity at the exit is approximately 249 m/s