Through an adiabatic, reversible nozzleGroup of answer choicesThe static enthalpy and static pressure decrease, the stagnation enthalpy remains constant, but the stagnation pressure decreasesThe static enthalpy and static pressure decrease, and the stagnation pressure and stagnation enthalpy remain constantThe static enthalpy and static pressure decrease, and both the stagnation enthalpy and stagnation pressure decrease.All of the above
Question
Through an adiabatic, reversible nozzleGroup of answer choicesThe static enthalpy and static pressure decrease, the stagnation enthalpy remains constant, but the stagnation pressure decreasesThe static enthalpy and static pressure decrease, and the stagnation pressure and stagnation enthalpy remain constantThe static enthalpy and static pressure decrease, and both the stagnation enthalpy and stagnation pressure decrease.All of the above
Solution
The correct answer is "The static enthalpy and static pressure decrease, the stagnation enthalpy remains constant, but the stagnation pressure decreases".
Here's the step by step explanation:
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In an adiabatic, reversible nozzle, the fluid accelerates, converting enthalpy (a form of energy) into kinetic energy. This means the static enthalpy decreases.
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As the fluid accelerates, it expands, which causes the static pressure to decrease.
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The stagnation enthalpy, which is the total enthalpy of the fluid (including both static and dynamic components), remains constant in an adiabatic, reversible process. This is a consequence of the conservation of energy.
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However, the stagnation pressure, which is the total pressure (including both static and dynamic components), decreases. This is because some of the pressure energy is converted into kinetic energy as the fluid accelerates.
Similar Questions
What is the stagnation pressure?Group of answer choicesThe sum of the static pressure and the specific kinetic energyThe pressure that would be reached during adiabatic, reversible stagnation of a moving fluidThe pressure that would be reached during an adiabatic deceleration of a moving fluid (reversible or irreversible)All of the above
During the isentropic expansion of a flow in an ideal choked diverging nozzle:Group of answer choicesThe static pressure is decreasing as the velocity and Mach number decreasesThe static pressure remains constantThe total enthalpy and the static pressure are dropping as the Mach number increasesThe static pressure is decreasing as the velocity and Mach number increases
Stagnation pressure is measured byGroup of answer choicesa Pitot tube whose inlet is perpendicular to the turbulent flowa Pitot tube whose inlet is normal to the flowa Pitot tube whose inlet is parallel to the flowa differential manometer
.Question 12Which of the following is true about a nozzle?1 pointNozzles are not adiabatic. The area at the exit is greater than the area at the entrance of a nozzle. The velocity of the fluid at the entrance is larger than the velocity of the fluid at the exit of a nozzle. There is a change in pressure from the inlet to the outlet of the nozzle.
Which of the following is true about a nozzle?1 pointNozzles are not adiabatic. The area at the exit is greater than the area at the entrance of a nozzle. The velocity of the fluid at the entrance is larger than the velocity of the fluid at the exit of a nozzle. There is a change in pressure from the inlet to the outlet of the nozzle.
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