Mechanical Engineering Exam  >  Mechanical Engineering Questions  >  At saturated vapour line the value of dryness... Start Learning for Free
At saturated vapour line the value of dryness fraction is
  • a)
    0
  • b)
    0.3
  • c)
    0.7
  • d)
    1.0
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7...
Dryness Fraction at Saturated Vapour Line


The dryness fraction is a term commonly used in thermodynamics to describe the quality of steam. It represents the ratio of the mass of dry steam present in a steam-water mixture to the total mass of the mixture. The dryness fraction can range from 0 to 1, where 0 represents a completely saturated liquid and 1 represents a completely dry or saturated vapor.


Saturated Vapour Line


The saturated vapour line on a steam table represents the boundary between the saturated liquid region and the saturated vapor region. It shows the properties of steam at different temperatures and pressures when it is in equilibrium with its liquid phase. At any point on the saturated vapour line, the steam is said to be in a saturated state, meaning it has reached its maximum possible dryness fraction at that particular temperature and pressure.


Value of Dryness Fraction at Saturated Vapour Line


At the saturated vapour line, the dryness fraction is always 1.0 or 100%. This means that the steam at this point is completely dry or saturated vapor, with no liquid water present. The reason for this is that as the steam is in equilibrium with its liquid phase, it has reached its maximum possible dryness fraction at that temperature and pressure.


As we move away from the saturated vapour line towards the saturated liquid region, the dryness fraction decreases. In the saturated liquid region, the dryness fraction is 0, indicating that the steam is completely in the liquid phase with no vapor present.


Significance of Dryness Fraction


The dryness fraction is an important parameter in steam engineering as it determines the quality and usability of steam. Steam with a high dryness fraction is considered to be of good quality and is preferred in many industrial applications. It contains less moisture, which reduces the risk of corrosion, erosion, and water hammer in steam pipes and machinery.


On the other hand, steam with a low dryness fraction can cause damage to equipment and reduce the efficiency of steam-driven processes. It may also lead to excessive condensation, which can result in water hammer and other operational issues.


In conclusion, at the saturated vapour line, the dryness fraction is always 1.0 or 100%, indicating that the steam is completely dry or in a saturated vapor state.
Free Test
Community Answer
At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7...
1
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Question Description
At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. 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 At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. 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 At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. Can you explain this answer?.
Solutions for At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. Can you explain this answer?, a detailed solution for At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice At saturated vapour line the value of dryness fraction isa)0b)0.3c)0.7d)1.0Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev