Psychrometrics II - MCQs with Answers
Q1. What is the temperature at which the water vapour in the mixture of water vapour in air, starts condensing called?a. condensation temperature
b. dew point temperature
c. vaporization temperature
d. all of the above
View Answer / Hide Answer ANSWER: b. dew point temperature
Q2. The temperature of air recorded by thermometer when the bulb is covered by a cotton wick saturated by water is called asa. dry bulb temperature
b. wet bulb temperature
c. stream temperature
d. psychrometric temperature
View Answer / Hide Answer ANSWER: b. wet bulb temperature
Q3. Which temperature can be measured by an instrument called psychrometer?a. dry bulb temperature
b. wet bulb temperature
c. both a. and b.
d. none of the above
View Answer / Hide Answer ANSWER: c. both a. and b.
Q4. When dry bulb temperature (DBT) and wet bulb temperature (WBT) are measured, greater the difference between DBT and WBT,a. greater the amount of water vapour held in the mixture
b. smaller the amount of water vapour held in the mixture
c. same the amount of water vapour held in the mixture
d. none of the above
View Answer / Hide Answer ANSWER: b. smaller the amount of water vapour held in the mixture
Q5. What is sensible cooling of air?a. the cooling in which sensible heat of air is removed in order to reduce temperature
b. the cooling in which temperature of air is reduced without changing in its moisture content
c. both a. and b.
d. none of the above
View Answer / Hide Answer ANSWER: c. both a. and b.
Q6. When the humidity ratio of air increases the the air is said to bea. dehumidified
b. humidified
c. heated
d. cooled
View Answer / Hide Answer Q7. The temperature at which the air cannot hold all the water vapour mixed in it and some vapour starts condensing is called asa. humidification temperature
b. dehumidification temperature
c. dew point temperature
d. none of the above
View Answer / Hide Answer ANSWER: c. dew point temperature
Q8. The formation of fog starts when,a. air temperature is equal to the dew point temperature
b. air temperature is greater than the dew point temperature
c. both a. and b.
d. none of the above
View Answer / Hide Answer ANSWER: a. air temperature is equal to the dew point temperature
Q9. When the dew point temperature is equal to the air temperature then the relative humidity isa. 0%
b. 50%
c. 100%
d. unpredictable
View Answer / Hide Answer Q10. On psychrometric chart, wet bulb temperature lines area. horizontal with uniformly spaced
b. horizontal with non-uniformly spaced
c. inclined with uniformly spaced
d. inclined with non-uniformly spaced
View Answer / Hide Answer ANSWER: d. inclined with non-uniformly spaced