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For air with a relative humidity of 80%
- a)the dry bulb temperature is less than the wet bulb temperature
- b)the dew point temperature is less than wet bulb temperature
- c)the dew point and web bulb temperature are equal
- d)the dry bulb and dew point temperatures are equal
Correct answer is option 'B'. Can you explain this answer?
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Explanation:
To understand why option B is the correct answer, let's first define the terms mentioned in the options:
- Dry Bulb Temperature: This is the regular temperature that we measure with a thermometer. It represents the temperature of the air without considering the moisture content.
- Wet Bulb Temperature: This is the lowest temperature that can be achieved by evaporating water into the air. It is measured using a wet bulb thermometer. The difference between the dry bulb temperature and the wet bulb temperature is an indication of the humidity of the air.
- Dew Point Temperature: This is the temperature at which the air becomes saturated with moisture, causing condensation to occur. It represents the point at which the air cannot hold any more moisture.
Now, let's analyze each option and determine why option B is the correct answer:
a) The dry bulb temperature is less than the wet bulb temperature:
This option is incorrect because in air with a relative humidity of 80%, the dry bulb temperature is always higher than the wet bulb temperature. The wet bulb temperature is lower due to the cooling effect of evaporation.
b) The dew point temperature is less than the wet bulb temperature:
This option is correct. The dew point temperature represents the temperature at which the air becomes saturated with moisture. In air with a relative humidity of 80%, the dew point temperature is lower than the wet bulb temperature. This is because the air is not yet saturated to the point of condensation.
c) The dew point and wet bulb temperature are equal:
This option is incorrect. The dew point and wet bulb temperatures are not equal in air with a relative humidity of 80%. The dew point temperature is lower than the wet bulb temperature.
d) The dry bulb and dew point temperatures are equal:
This option is incorrect. The dry bulb and dew point temperatures are not equal in air with a relative humidity of 80%. The dew point temperature is lower than the dry bulb temperature.
Therefore, the correct answer is option B: the dew point temperature is less than the wet bulb temperature in air with a relative humidity of 80%.
To understand why option B is the correct answer, let's first define the terms mentioned in the options:
- Dry Bulb Temperature: This is the regular temperature that we measure with a thermometer. It represents the temperature of the air without considering the moisture content.
- Wet Bulb Temperature: This is the lowest temperature that can be achieved by evaporating water into the air. It is measured using a wet bulb thermometer. The difference between the dry bulb temperature and the wet bulb temperature is an indication of the humidity of the air.
- Dew Point Temperature: This is the temperature at which the air becomes saturated with moisture, causing condensation to occur. It represents the point at which the air cannot hold any more moisture.
Now, let's analyze each option and determine why option B is the correct answer:
a) The dry bulb temperature is less than the wet bulb temperature:
This option is incorrect because in air with a relative humidity of 80%, the dry bulb temperature is always higher than the wet bulb temperature. The wet bulb temperature is lower due to the cooling effect of evaporation.
b) The dew point temperature is less than the wet bulb temperature:
This option is correct. The dew point temperature represents the temperature at which the air becomes saturated with moisture. In air with a relative humidity of 80%, the dew point temperature is lower than the wet bulb temperature. This is because the air is not yet saturated to the point of condensation.
c) The dew point and wet bulb temperature are equal:
This option is incorrect. The dew point and wet bulb temperatures are not equal in air with a relative humidity of 80%. The dew point temperature is lower than the wet bulb temperature.
d) The dry bulb and dew point temperatures are equal:
This option is incorrect. The dry bulb and dew point temperatures are not equal in air with a relative humidity of 80%. The dew point temperature is lower than the dry bulb temperature.
Therefore, the correct answer is option B: the dew point temperature is less than the wet bulb temperature in air with a relative humidity of 80%.
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For air with a relative humidity of 80%a)the dry bulb temperature is less than the wet bulb temperatureb)the dew point temperature is less than wet bulb temperaturec)the dew point and web bulb temperature are equald)the dry bulb and dew point temperatures are equalCorrect answer is option 'B'. Can you explain this answer?
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For air with a relative humidity of 80%a)the dry bulb temperature is less than the wet bulb temperatureb)the dew point temperature is less than wet bulb temperaturec)the dew point and web bulb temperature are equald)the dry bulb and dew point temperatures are equalCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about For air with a relative humidity of 80%a)the dry bulb temperature is less than the wet bulb temperatureb)the dew point temperature is less than wet bulb temperaturec)the dew point and web bulb temperature are equald)the dry bulb and dew point temperatures are equalCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For air with a relative humidity of 80%a)the dry bulb temperature is less than the wet bulb temperatureb)the dew point temperature is less than wet bulb temperaturec)the dew point and web bulb temperature are equald)the dry bulb and dew point temperatures are equalCorrect answer is option 'B'. Can you explain this answer?.
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