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.
Question
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.
Solution
The statement "There is a change in pressure from the inlet to the outlet of the nozzle" is true about a nozzle.
Here's why:
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Nozzles are typically designed to be adiabatic, meaning they don't allow heat to enter or leave the system. So, the statement "Nozzles are not adiabatic" is false.
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The purpose of a nozzle is to increase the velocity of a fluid. This is achieved by decreasing the cross-sectional area from the entrance to the exit. Therefore, the statement "The area at the exit is greater than the area at the entrance of a nozzle" is false.
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As mentioned above, nozzles are designed to increase the velocity of a fluid. This means the velocity of the fluid at the exit is larger than the velocity of the fluid at the entrance. So, the statement "The velocity of the fluid at the entrance is larger than the velocity of the fluid at the exit of a nozzle" is false.
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There is indeed a change in pressure from the inlet to the outlet of the nozzle. As the fluid's velocity increases, its pressure decreases. This is a principle known as Bernoulli's principle. So, the statement "There is a change in pressure from the inlet to the outlet of the nozzle" is true.
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