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Which of the following properties are NOT sufficient to determine the properties of a vapour?
- Temperature
- Pressure
- Dryness fraction
- Specific volume
- a)1 and 2
- b)2 and 3
- c)3 and 4
- d)1 and 4
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which of the following properties are NOT sufficient to determine the ...
In properties of vapour, we require at least two independent properties to determine the state of the vapour. Both pressure and temperature are dependent properties so, if we know only pressure and temperature, we can’t determine the properties of vapour.
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Which of the following properties are NOT sufficient to determine the ...
Properties of a Vapour
Vapour is a substance in the gaseous state that is at a temperature below its critical temperature. The properties of a vapour can be determined by various factors. The given properties are:
1. Temperature
2. Pressure
3. Dryness fraction
4. Specific volume
Sufficient and Insufficient Factors
The properties that are sufficient to determine the properties of a vapour are:
1. Temperature
2. Pressure
3. Dryness fraction
The properties that are not sufficient to determine the properties of a vapour are:
1. Temperature and Pressure
2. Specific volume
Explanation
Temperature:
- Vapour pressure is directly proportional to the temperature of the vapour.
- The boiling point of a liquid is directly proportional to the vapour pressure.
- The temperature of the vapour is directly proportional to the internal energy of the vapour.
Pressure:
- The pressure of the vapour is directly proportional to the density of the vapour.
- The pressure of the vapour is inversely proportional to the volume of the vapour.
Dryness fraction:
- Dryness fraction is the ratio of the mass of dry vapour to the total mass of the vapour.
- Dryness fraction is a measure of the amount of moisture present in the vapour.
- Dryness fraction is directly proportional to the enthalpy of the vapour.
Specific volume:
- Specific volume is the volume occupied by a unit mass of the vapour.
- Specific volume is inversely proportional to the density of the vapour.
- Specific volume is directly proportional to the temperature of the vapour.
Conclusion
Therefore, the properties of a vapour can be determined by temperature, pressure, and dryness fraction. The specific volume is not sufficient to determine the properties of a vapour.
Vapour is a substance in the gaseous state that is at a temperature below its critical temperature. The properties of a vapour can be determined by various factors. The given properties are:
1. Temperature
2. Pressure
3. Dryness fraction
4. Specific volume
Sufficient and Insufficient Factors
The properties that are sufficient to determine the properties of a vapour are:
1. Temperature
2. Pressure
3. Dryness fraction
The properties that are not sufficient to determine the properties of a vapour are:
1. Temperature and Pressure
2. Specific volume
Explanation
Temperature:
- Vapour pressure is directly proportional to the temperature of the vapour.
- The boiling point of a liquid is directly proportional to the vapour pressure.
- The temperature of the vapour is directly proportional to the internal energy of the vapour.
Pressure:
- The pressure of the vapour is directly proportional to the density of the vapour.
- The pressure of the vapour is inversely proportional to the volume of the vapour.
Dryness fraction:
- Dryness fraction is the ratio of the mass of dry vapour to the total mass of the vapour.
- Dryness fraction is a measure of the amount of moisture present in the vapour.
- Dryness fraction is directly proportional to the enthalpy of the vapour.
Specific volume:
- Specific volume is the volume occupied by a unit mass of the vapour.
- Specific volume is inversely proportional to the density of the vapour.
- Specific volume is directly proportional to the temperature of the vapour.
Conclusion
Therefore, the properties of a vapour can be determined by temperature, pressure, and dryness fraction. The specific volume is not sufficient to determine the properties of a vapour.
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Which of the following properties are NOT sufficient to determine the properties of a vapour? Temperature Pressure Dryness fraction Specific volumea)1 and 2b)2 and 3c)3 and 4d)1 and 4Correct answer is option 'A'. Can you explain this answer?
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