Mechanical Engineering Exam > Mechanical Engineering Questions > Match the following :A. Heat I. State functi...
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Match the following :
A. Heat I. State function
B. Internal energy II. Path function
C.Work
D. Entropy
A. Heat I. State function
B. Internal energy II. Path function
C.Work
D. Entropy
- a)A-II, B-I, C-I, D-I
- b)A-II, B-I, C-II, D-II
- c)A-II, B-II, C-I, D-I
- d)A-II, B-I, C-II, D-I
Correct answer is option 'D'. Can you explain this answer?
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Match the following :A. Heat I. State functionB. Internal energy II....
Answer:
Explanation:
To understand the match between the given terms (A, B, C, D) and their corresponding properties (I, II), we need to have a clear understanding of each term. Let's discuss each term and its property in detail:
A. Heat:
Heat is a form of energy that is transferred from one object to another due to a temperature difference between them. It is a measure of the total energy of the particles in a substance. Heat is a path function because it depends on the specific path taken during the energy transfer.
B. Internal energy:
Internal energy is the total energy contained within a system, including the kinetic and potential energies of its particles. It is a sum of the microscopic energy of all the particles in a substance. Internal energy is a state function because it only depends on the initial and final states of the system, regardless of the path taken to reach those states.
C. Work:
Work is defined as the transfer of energy from one system to another due to the application of a force. It can be done by mechanical, electrical, or other means. Work is a path function because it depends on the specific path taken during the energy transfer.
D. Entropy:
Entropy is a measure of the disorder or randomness in a system. It is a property that quantifies the number of microstates available to a system. Entropy is a state function because it only depends on the initial and final states of the system, regardless of the path taken to reach those states.
Matching:
Based on the above explanations, we can match the terms with their corresponding properties as follows:
A. Heat - II. Path function
B. Internal energy - I. State function
C. Work - II. Path function
D. Entropy - I. State function
Therefore, the correct match is option 'D' - A-II, B-I, C-II, D-I.
Explanation:
To understand the match between the given terms (A, B, C, D) and their corresponding properties (I, II), we need to have a clear understanding of each term. Let's discuss each term and its property in detail:
A. Heat:
Heat is a form of energy that is transferred from one object to another due to a temperature difference between them. It is a measure of the total energy of the particles in a substance. Heat is a path function because it depends on the specific path taken during the energy transfer.
B. Internal energy:
Internal energy is the total energy contained within a system, including the kinetic and potential energies of its particles. It is a sum of the microscopic energy of all the particles in a substance. Internal energy is a state function because it only depends on the initial and final states of the system, regardless of the path taken to reach those states.
C. Work:
Work is defined as the transfer of energy from one system to another due to the application of a force. It can be done by mechanical, electrical, or other means. Work is a path function because it depends on the specific path taken during the energy transfer.
D. Entropy:
Entropy is a measure of the disorder or randomness in a system. It is a property that quantifies the number of microstates available to a system. Entropy is a state function because it only depends on the initial and final states of the system, regardless of the path taken to reach those states.
Matching:
Based on the above explanations, we can match the terms with their corresponding properties as follows:
A. Heat - II. Path function
B. Internal energy - I. State function
C. Work - II. Path function
D. Entropy - I. State function
Therefore, the correct match is option 'D' - A-II, B-I, C-II, D-I.
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