STUDENTS SUCCESS
Revision Examination Tests
“Come all for this Greatness”
... 100% Correct Ans ...
COSC 325 MEP I EXAM 1 2024-2025 ACTUAL EXAM COMPLETE 200-
QUESTIONS AND CORRECT DETAILED ANSWERS
Quiz What is the driving force for water vapor movement?
Ans: Difference in vapor pressure
Quiz What is the elevation up to which very little error is introduced in the information
gathered using a psyhometric chart?
Ans: 2000 ft
Quiz Which of the following can be used effectively for gathering data to produce
sensible and ltent heat changes in an air/water vapor mixture, in order to predict
heating r cooling capacity?
Ans: Psychometric chart
Quiz What is meant by specific volume of air?
Ans: Number of cubic feet occupied by a pound of air (ft^3/lb)
Quiz When does condensation occur on a building component's surface?
Ans: When the surface temperature is lower than the dew ppoint temperature of the
ambient air/water vapor mixture
Quiz A large part of winter heating energy for a building is used to remove moisture
from air
Ans: False
Quiz What is meant by grain difference?
Ans: Water vapor difference between outdoor and indoor air in grains per pound of
dry air
, Quiz What is the quantity of water that will consume or release 1 BTU of heat when
heated up or cooled down by 1 degree F?
Ans: 1 pound of air
Quiz The values of at least ___ unrelated characteristics of an air-water vapor
mixture ave to be known in order to find the values of other characteristics, using a
psychometric chart
Ans: 2
Quiz The factors that contribute to both sensible and latent heat gains are ___ and
outside air
Ans: people
Quiz The rate of air change per hour (ACH) in a building is .75 What does it mean?
Ans: 75% of air in the building is replaced every hour
Quiz Which one of the following could be a factor for infiltration of outside air into
buildings
Ans: temperature difference between inside and outside air
Quiz How would you calculate the U value of a construction made of composite
materials?
Ans: By adding the R values of all materials in a construction and finding the
reciprocal of the sum
Quiz What is one of the functions of an enthalpy-controlled economizer?
Ans: It evaluates both outdoor dry-bulb temp and humidity
Quiz What index is used to measure the tendency of a material to oppose heat flow?
Ans: R-value
Quiz what is one of the important means of maintaining indoor air quality of a
building?
Ans: By maintaining a continuous supply of fresh outdoor air
Quiz Internal loads play a significant role in heat gain by buildings, which of the
following is not considered as an internal load?
Ans: indoor air
Quiz What are the factors that contribute to latent heat gain?
Revision Examination Tests
“Come all for this Greatness”
... 100% Correct Ans ...
COSC 325 MEP I EXAM 1 2024-2025 ACTUAL EXAM COMPLETE 200-
QUESTIONS AND CORRECT DETAILED ANSWERS
Quiz What is the driving force for water vapor movement?
Ans: Difference in vapor pressure
Quiz What is the elevation up to which very little error is introduced in the information
gathered using a psyhometric chart?
Ans: 2000 ft
Quiz Which of the following can be used effectively for gathering data to produce
sensible and ltent heat changes in an air/water vapor mixture, in order to predict
heating r cooling capacity?
Ans: Psychometric chart
Quiz What is meant by specific volume of air?
Ans: Number of cubic feet occupied by a pound of air (ft^3/lb)
Quiz When does condensation occur on a building component's surface?
Ans: When the surface temperature is lower than the dew ppoint temperature of the
ambient air/water vapor mixture
Quiz A large part of winter heating energy for a building is used to remove moisture
from air
Ans: False
Quiz What is meant by grain difference?
Ans: Water vapor difference between outdoor and indoor air in grains per pound of
dry air
, Quiz What is the quantity of water that will consume or release 1 BTU of heat when
heated up or cooled down by 1 degree F?
Ans: 1 pound of air
Quiz The values of at least ___ unrelated characteristics of an air-water vapor
mixture ave to be known in order to find the values of other characteristics, using a
psychometric chart
Ans: 2
Quiz The factors that contribute to both sensible and latent heat gains are ___ and
outside air
Ans: people
Quiz The rate of air change per hour (ACH) in a building is .75 What does it mean?
Ans: 75% of air in the building is replaced every hour
Quiz Which one of the following could be a factor for infiltration of outside air into
buildings
Ans: temperature difference between inside and outside air
Quiz How would you calculate the U value of a construction made of composite
materials?
Ans: By adding the R values of all materials in a construction and finding the
reciprocal of the sum
Quiz What is one of the functions of an enthalpy-controlled economizer?
Ans: It evaluates both outdoor dry-bulb temp and humidity
Quiz What index is used to measure the tendency of a material to oppose heat flow?
Ans: R-value
Quiz what is one of the important means of maintaining indoor air quality of a
building?
Ans: By maintaining a continuous supply of fresh outdoor air
Quiz Internal loads play a significant role in heat gain by buildings, which of the
following is not considered as an internal load?
Ans: indoor air
Quiz What are the factors that contribute to latent heat gain?
