Mechanical Engineering Exam  >  Mechanical Engineering Questions  >  A closed system is one in whicha)mass does no... Start Learning for Free
A closed system is one in which
  • a)
    mass does not cross boundaries of the system, though energy may do so
  • b)
    mass crosses the boundary but not the energy
  • c)
    neither mass nor energy crosses the boundaries of the system
  • d)
    both energy and mass cross the boundaries of the system
  • e)
    thermodynamic reactions take place
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A closed system is one in whicha)mass does not cross boundaries of the...
Definition of a Closed System
A closed system is a thermodynamic system in which mass does not cross the boundaries of the system, though energy may do so.

Explanation
A closed system is a system that is isolated from its surroundings, in the sense that no mass can pass through its boundaries. However, energy can be transferred into or out of the system. For example, a sealed container of gas is a closed system. The gas particles are confined to the container and cannot escape, but the container itself can be heated or cooled to change the energy of the gas.

In a closed system, the total mass of the system remains constant, but the energy of the system can change due to work or heat transfer. This makes it an important concept in thermodynamics, as it allows researchers to study the behavior of a system without worrying about the effects of external mass flow.

Examples of Closed Systems
Some examples of closed systems include:

- A sealed container of gas
- A bomb calorimeter used to measure the heat of combustion of a substance
- A spacecraft in orbit around the Earth
- A piston-cylinder assembly used for thermodynamic analysis

Conclusion
In conclusion, a closed system is a thermodynamic system in which mass does not cross the boundaries of the system, though energy may do so. It is an important concept in thermodynamics, as it allows researchers to study the behavior of a system without worrying about the effects of external mass flow.
Free Test
Community Answer
A closed system is one in whicha)mass does not cross boundaries of the...
In nonrelativistic classical mechanics, a closed system is a physical system that doesn't exchange any matter with its surroundings, and isn't subject to any net force whose source is external to the system. A closed system in classical mechanics would be considered an isolated system in thermodynamics.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Question Description
A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. 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 A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. 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 A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. Can you explain this answer?.
Solutions for A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. 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 A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A closed system is one in whicha)mass does not cross boundaries of the system, though energy may do sob)mass crosses the boundary but not the energyc)neither mass nor energy crosses the boundaries of the systemd)both energy and mass cross the boundaries of the systeme)thermodynamic reactions take placeCorrect answer is option 'A'. 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