Bissoy.com
Doctors Medicines MCQs Q&A

If wet-bulb depression is zero, then the relative humidity is also zero.

If wet-bulb depression is zero, then the relative humidity is also zero. Correct Answer False

The difference between dry bulb temperature and wet bulb temperature is called wet-bulb depression. It indicates the relative humidity of the air. So, if the wet-bulb depression is zero, then the relative humidity is 100 % or 1.0.

Related Questions

18. Depression is different from the fluctuations in mood that people experience as a part of normal life. Temporary emotional responses to the challenges of everyday life do not constitute depression. Likewise, even the feeling of grief resulting from the death of someone close is not itself depression if it does not persist. Depression can, however, be related to bereavement - when depression follows a loss, psychologists call it a "complicated bereavement" Q. How is depression different from mood swings?
Consider the following statements with regard to atmospheric humidity: 1. Absolute humidity is the amount of water vapour per unit volume. 2. Hygrometer is used to measure relative humidity. 3. Dew point is the temperature at which the relative humidity is 75%. Which of the above statements are correct?
High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.
Consider the following statements and choose the correct answer:
1. A direct proportionality exists between vapour pressure and the concentration of water vapour in the atmosphere
2. Relative humidity is an expression of the ratio of the actual vapour pressure of the atmosphere when saturated at the same temperature
3. A rise or fall in temperature with no change in vapour pressure will cause a drop or rise, respectively, in relative humidity
4. A rise or fall in vapour pressure with no change in temperature will be accompanied by a rise or fall, respectively, in relative humidity
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.
The percentage humidity is less than the relative humidity only at __________ percent humidity.
There are many instruments for measuring relative humidity. Which of the following statements are correct with respect to these devices? I. The hygrometer uses a tuft of human hair to measure relative humidity. II. Psychrometers are a pair of thermometers.
If ouside air is to be conditioned from 60% relative humidity and 40 °C dry bulb temperature to 50% relative humidity and 24 °C dry bulb temperature, which psychromatic process would be required?
Relative humidity at Agra is _____________ the relative humidity at Kanpur.
Statement 1: When there is an equilibrium between the vapor pressure and the percentage relative humidity, water activity is directly proportional to the percentage relative humidity. Statement 2: Even a water activity as high as 0.85 for food items is considered to be very dry for substances.