Mechanical Engineering Exam > Mechanical Engineering Videos > Topicwise Question Bank for Mechanical Engineering > Specific Humidity & Relative Humidity
Specific Humidity & Relative Humidity Video Lecture | Topicwise Question Bank for Mechanical Engineering
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FAQs on Specific Humidity & Relative Humidity Video Lecture - Topicwise Question Bank for Mechanical Engineering
| 1. What is specific humidity and how is it different from relative humidity? |  |
Ans. Specific humidity is a measurement of the actual amount of water vapor present in the air, expressed in grams of water vapor per kilogram of air. It is different from relative humidity, which is the ratio of the amount of water vapor present in the air to the maximum amount the air could hold at a given temperature, expressed as a percentage.
| 2. How is specific humidity calculated? | |
Ans. Specific humidity can be calculated by dividing the mass of water vapor in a given air sample by the total mass of the air sample. It is commonly determined using specialized instruments such as a hygrometer or a psychrometer.
| 3. What factors affect specific humidity? | |
Ans. Specific humidity is influenced by temperature, pressure, and the amount of water vapor present in the air. As temperature increases, the air's ability to hold water vapor also increases, leading to higher specific humidity. Similarly, an increase in pressure can result in a higher specific humidity.
| 4. Why is specific humidity an important parameter in mechanical engineering? | |
Ans. Specific humidity is an important parameter in mechanical engineering as it helps determine the moisture content in the air. This information is crucial for designing and operating HVAC systems, as well as for understanding the potential for condensation and moisture-related issues in various mechanical systems.
| 5. How does specific humidity affect human comfort? | |
Ans. Specific humidity plays a significant role in human comfort. High specific humidity levels can make the air feel more humid, leading to discomfort and difficulty in perspiration evaporation. On the other hand, low specific humidity levels can result in dry air, which may cause skin and respiratory problems. Maintaining an optimal specific humidity range is essential for ensuring comfortable indoor environments.
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Oct 30, 2024 Last updated |
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