Mechanical Engineering Exam > Mechanical Engineering Questions > In a throttling processa)steam temperature re...
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In a throttling process
- a)steam temperature remains constant
- b)steam pressure remains constant
- c)steam enthalpy remains constant
- d)steam entropy remains constant
- e)steam volume remains constant
Correct answer is option 'C'. Can you explain this answer?
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In a throttling processa)steam temperature remains constantb)steam pre...
Throttling Process in Thermodynamics:
- Definition: Throttling process is an irreversible adiabatic process in which a fluid undergoes a rapid change in its pressure and temperature without any heat transfer.
- Characteristics:
- Occurs in a constant enthalpy process.
- Results in a decrease in pressure and temperature of the fluid.
Explanation on why Steam Enthalpy remains constant in Throttling Process:
- During a throttling process, the fluid (in this case, steam) experiences a rapid expansion through a valve, causing a drop in pressure and temperature.
- As the process is adiabatic, there is no heat transfer involved, so the enthalpy of the steam remains constant.
- Enthalpy is a measure of the total energy of a system, including internal energy and pressure-volume work done. In a throttling process, the work done is negligible, so the enthalpy remains constant.
- Therefore, in a throttling process, steam enthalpy remains constant while pressure and temperature change.
Conclusion:
- Steam enthalpy remains constant in a throttling process due to the adiabatic and rapid nature of the expansion, which results in no heat transfer and negligible work done.
- Understanding the behavior of steam in throttling processes is crucial for various engineering applications, such as in steam turbines and refrigeration systems.
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In a throttling processa)steam temperature remains constantb)steam pressure remains constantc)steam enthalpy remains constantd)steam entropy remains constante)steam volume remains constantCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about In a throttling processa)steam temperature remains constantb)steam pressure remains constantc)steam enthalpy remains constantd)steam entropy remains constante)steam volume remains constantCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a throttling processa)steam temperature remains constantb)steam pressure remains constantc)steam enthalpy remains constantd)steam entropy remains constante)steam volume remains constantCorrect answer is option 'C'. Can you explain this answer?.
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