Application of the Psychrometric Chart and Comfort Condition Exam Questions and Answers

Application of the Psychrometric
Chart and Comfort Condition Exam
Questions and Answers12

The relative humidity should be maintained between

a) 50% and 80% during the winter

b) 20% and 60% during the winter

c) 40% and 75% during the summer

d) 25% and 60% during the summer

e) 30% and 70% during the summer and the winter - ANSWERS-e) 30% and 70% during the
summer and the winter



Effective temperature is defined as a measure of comfort which involves

a) the effects of relative humidity

b) the effects of air movement

c) the effects of dry-bulb temperature

d) the effects of wet-bulb temperature

e) all of the above - ANSWERS-e) all of the above



During the winter, the majority of people feel comfortable when the effective temperature is
between

a) 15 and 19 degrees C

b) 20.5 and 24 degrees C

c) 19 and 24 degrees C

d) 17.2 and 21.7 degrees C

, e) 16 and 19.5 degrees C - ANSWERS-d) 17.2 and 21.7 degrees C



During the summer, the majority of people feel comfortable when the effective temperature is
between

a) 17.2 and 21.7 degrees C

b) 16 and 19.5 degrees C

c) 15 and 19 degrees C

d) 21 and 25 degrees C

e) 19 and 24 degrees C - ANSWERS-e) 19 and 24 degrees C



Which of the following properties cannot be found on the psychrometric chart?

a) dewpoint temperature

b) partial pressure

c) specific humidity

d) enthalpy

e) relative humidity - ANSWERS-b) partial pressure



The intersection between the line running vertically from the point on the dry-bulb scale and
the downward diagonally running line from the wet-bulb scale is defined as

a) the Dewpoint temperature

b) the partial pressure

c) the reference point

d) the specific volume

e) the relative humidity - ANSWERS-c) the reference point



During sensible heating which of the following results is true?

a) dry-bulb temperature lowers