MES Exam 2 questions with correct solutions
A ton of cooling is equal to _ BTU/hr. - **🔰 VERIFIED ANSWERS🔰 ✔✔12,000
For maximum comfort, temperature control equipment maintains air temperature in a
building within _ degree F or _ degree F of the temperature necessary of comfort. - **🔰
VERIFIED ANSWERS🔰 ✔✔1;2
Comfort is usually attained at normal cooling and heating temperatures with a relative
humidity of a about_% - **🔰 VERIFIED ANSWERS🔰 ✔✔50
__ Level is controlled by humidifiers and dehumidifiers. - **🔰 VERIFIED ANSWERS🔰
✔✔Humidity
A__ is a device that removes moisture from air by causing moisture to condense. - **🔰
VERIFIED ANSWERS🔰 ✔✔Dehumidifier
_ is the movement of air - **🔰 VERIFIED ANSWERS🔰 ✔✔Circulation
_ is the variation of air temperature in a building space that occurs when warm air rises to
the ceiling and cold air drops to the floor. - **🔰 VERIFIED ANSWERS🔰 ✔✔Temperature
stratification
Air velocity is expressed in_ - **🔰 VERIFIED ANSWERS🔰 ✔✔Feet per minute
The type, location, and _ of registers determine the amount of supply air that is introduced
into each building space and the distribution pattern of the air. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Size
,Common reasons for poor indoor air quality in building spaces are_ - **🔰 VERIFIED
ANSWERS🔰 ✔✔Air pollutant sources
Poor ventilation
Unanticipated building uses
_ is the condition that occurs when a person cannot sense a difference between themselves
and the surrounding air. - **🔰 VERIFIED ANSWERS🔰 ✔✔Comfort
A(n) _ is the amount of heat required to raise 1 lb of water to 1 degree F. - **🔰 VERIFIED
ANSWERS🔰 ✔✔BTU
A(n) _ is the amount of heat required to melt a ton of ice over an 24 - hour period. - **🔰
VERIFIED ANSWERS🔰 ✔✔Ton of cooling
_ is the amount of moisture in the air. - **🔰 VERIFIED ANSWERS🔰 ✔✔Humidity
_ humidity is the amount of moisture in the air compared to the amount of moisture the air
would hold at the same temperature if it were saturated. - **🔰 VERIFIED ANSWERS🔰
✔✔Relative
A(n) _ is a device that adds moisture to air by causing water to evaporate into the air. - **🔰
VERIFIED ANSWERS🔰 ✔✔Humidifier
_ is the temperature below which moisture begins to condense. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Dew Point
_ is the air that contains an excess of impurities such as CO2 and lacks oxygen required to
provide comfort. - **🔰 VERIFIED ANSWERS🔰 ✔✔Stagnant air
,_ is the process of removing particles and contaminants from air that circulates through an
air distribution system. - **🔰 VERIFIED ANSWERS🔰 ✔✔Filtration
_ is the process that occurs when outdoor air is brought into the building. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Ventilation
_ is air that is used to replace air that is lost to exhaust - **🔰 VERIFIED ANSWERS🔰
✔✔Makeup air
What does BTU stand for? - **🔰 VERIFIED ANSWERS🔰 ✔✔British Thermal Unit
Gas to liquid - **🔰 VERIFIED ANSWERS🔰 ✔✔Condense
How much cooling is needed for every 600 square ft - **🔰 VERIFIED ANSWERS🔰 ✔✔1
ton
The air in forced-air heating system is automatically cleaned by _ that are placed in the air
ductwork where the air enters the heating or cooling equipment. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Filters
Humidity is expressed as _ - **🔰 VERIFIED ANSWERS🔰 ✔✔Relative humidity or
humidity ratio
A grain is the unit of measure that equals _ lb - **🔰 VERIFIED ANSWERS🔰 ✔✔1/7000
Wet bulb temperature readings indicate the amount of - **🔰 VERIFIED ANSWERS🔰
✔✔Moisture in the air
One pound of dry air and it's associated moisture at standard condition has a pressure of
_Hg. - **🔰 VERIFIED ANSWERS🔰 ✔✔29.92
, _directly related to the amount of moisture in the air. - **🔰 VERIFIED ANSWERS🔰 ✔✔-
Wet bulb temperature
-Humidity ratio
-Relative Humidity
A change in both dry bulb and wet bulb temperatures affects _. - **🔰 VERIFIED
ANSWERS🔰 ✔✔-enthalpy
On a chart for standard conditions, humidity ratio begins at 0 lb of moisture per pound of
dry air and increases to about _ on of moisture per pound of dry air. - **🔰 VERIFIED
ANSWERS🔰 ✔✔0.03
Engineers and air conditioning technicians use _ to define properties of moist air during
processes that change the properties of air. - **🔰 VERIFIED ANSWERS🔰
✔✔Psychrometric Chart
When moist air is heated, sensible heat is added and there is a _ change in humidity. - **🔰
VERIFIED ANSWERS🔰 ✔✔No
_ is the point that represents the properties of air before it goes through a process. - **🔰
VERIFIED ANSWERS🔰 ✔✔Initial condition
The properties of cool air are found by locating the _ of air in the chart and identifying the
appropriate properties of the air at each point. - **🔰 VERIFIED ANSWERS🔰 ✔✔Final
condition and initial condition
_ is the measurement of sensible heat - **🔰 VERIFIED ANSWERS🔰 ✔✔Dry Bulb
Temperature
A ton of cooling is equal to _ BTU/hr. - **🔰 VERIFIED ANSWERS🔰 ✔✔12,000
For maximum comfort, temperature control equipment maintains air temperature in a
building within _ degree F or _ degree F of the temperature necessary of comfort. - **🔰
VERIFIED ANSWERS🔰 ✔✔1;2
Comfort is usually attained at normal cooling and heating temperatures with a relative
humidity of a about_% - **🔰 VERIFIED ANSWERS🔰 ✔✔50
__ Level is controlled by humidifiers and dehumidifiers. - **🔰 VERIFIED ANSWERS🔰
✔✔Humidity
A__ is a device that removes moisture from air by causing moisture to condense. - **🔰
VERIFIED ANSWERS🔰 ✔✔Dehumidifier
_ is the movement of air - **🔰 VERIFIED ANSWERS🔰 ✔✔Circulation
_ is the variation of air temperature in a building space that occurs when warm air rises to
the ceiling and cold air drops to the floor. - **🔰 VERIFIED ANSWERS🔰 ✔✔Temperature
stratification
Air velocity is expressed in_ - **🔰 VERIFIED ANSWERS🔰 ✔✔Feet per minute
The type, location, and _ of registers determine the amount of supply air that is introduced
into each building space and the distribution pattern of the air. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Size
,Common reasons for poor indoor air quality in building spaces are_ - **🔰 VERIFIED
ANSWERS🔰 ✔✔Air pollutant sources
Poor ventilation
Unanticipated building uses
_ is the condition that occurs when a person cannot sense a difference between themselves
and the surrounding air. - **🔰 VERIFIED ANSWERS🔰 ✔✔Comfort
A(n) _ is the amount of heat required to raise 1 lb of water to 1 degree F. - **🔰 VERIFIED
ANSWERS🔰 ✔✔BTU
A(n) _ is the amount of heat required to melt a ton of ice over an 24 - hour period. - **🔰
VERIFIED ANSWERS🔰 ✔✔Ton of cooling
_ is the amount of moisture in the air. - **🔰 VERIFIED ANSWERS🔰 ✔✔Humidity
_ humidity is the amount of moisture in the air compared to the amount of moisture the air
would hold at the same temperature if it were saturated. - **🔰 VERIFIED ANSWERS🔰
✔✔Relative
A(n) _ is a device that adds moisture to air by causing water to evaporate into the air. - **🔰
VERIFIED ANSWERS🔰 ✔✔Humidifier
_ is the temperature below which moisture begins to condense. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Dew Point
_ is the air that contains an excess of impurities such as CO2 and lacks oxygen required to
provide comfort. - **🔰 VERIFIED ANSWERS🔰 ✔✔Stagnant air
,_ is the process of removing particles and contaminants from air that circulates through an
air distribution system. - **🔰 VERIFIED ANSWERS🔰 ✔✔Filtration
_ is the process that occurs when outdoor air is brought into the building. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Ventilation
_ is air that is used to replace air that is lost to exhaust - **🔰 VERIFIED ANSWERS🔰
✔✔Makeup air
What does BTU stand for? - **🔰 VERIFIED ANSWERS🔰 ✔✔British Thermal Unit
Gas to liquid - **🔰 VERIFIED ANSWERS🔰 ✔✔Condense
How much cooling is needed for every 600 square ft - **🔰 VERIFIED ANSWERS🔰 ✔✔1
ton
The air in forced-air heating system is automatically cleaned by _ that are placed in the air
ductwork where the air enters the heating or cooling equipment. - **🔰 VERIFIED
ANSWERS🔰 ✔✔Filters
Humidity is expressed as _ - **🔰 VERIFIED ANSWERS🔰 ✔✔Relative humidity or
humidity ratio
A grain is the unit of measure that equals _ lb - **🔰 VERIFIED ANSWERS🔰 ✔✔1/7000
Wet bulb temperature readings indicate the amount of - **🔰 VERIFIED ANSWERS🔰
✔✔Moisture in the air
One pound of dry air and it's associated moisture at standard condition has a pressure of
_Hg. - **🔰 VERIFIED ANSWERS🔰 ✔✔29.92
, _directly related to the amount of moisture in the air. - **🔰 VERIFIED ANSWERS🔰 ✔✔-
Wet bulb temperature
-Humidity ratio
-Relative Humidity
A change in both dry bulb and wet bulb temperatures affects _. - **🔰 VERIFIED
ANSWERS🔰 ✔✔-enthalpy
On a chart for standard conditions, humidity ratio begins at 0 lb of moisture per pound of
dry air and increases to about _ on of moisture per pound of dry air. - **🔰 VERIFIED
ANSWERS🔰 ✔✔0.03
Engineers and air conditioning technicians use _ to define properties of moist air during
processes that change the properties of air. - **🔰 VERIFIED ANSWERS🔰
✔✔Psychrometric Chart
When moist air is heated, sensible heat is added and there is a _ change in humidity. - **🔰
VERIFIED ANSWERS🔰 ✔✔No
_ is the point that represents the properties of air before it goes through a process. - **🔰
VERIFIED ANSWERS🔰 ✔✔Initial condition
The properties of cool air are found by locating the _ of air in the chart and identifying the
appropriate properties of the air at each point. - **🔰 VERIFIED ANSWERS🔰 ✔✔Final
condition and initial condition
_ is the measurement of sensible heat - **🔰 VERIFIED ANSWERS🔰 ✔✔Dry Bulb
Temperature
