COSC 325 HOUSTON (MECHANICAL)
QUESTIONS COMPLETE WITH
CORRECT ANSWERS
\.What division is mechanical - ANSWERS✔-Division 23
\.how many Btu/H in a ton - ANSWERS✔-12000
\.What is comfortable relative humidity? - ANSWERS✔-50%
\.Air velocity - ANSWERS✔-the speed at which air moves from one point to
another
\.what is ideal air movement - ANSWERS✔-40fpm
\.What is the most common duct material - ANSWERS✔-sheet metal, measured in
gauge (smaller number thicker material)
\.Why insulate duct work - ANSWERS✔-Condensation
\.What is the average CO2 level for good indoor air quality? - ANSWERS✔-800
, \.Make up air - ANSWERS✔-Air supplied to a space to replace exhausted air
\.exhaust air - ANSWERS✔-Any foul or unwanted air removed from a space by
mechanical means.
\.What is the normal building space requirement for fresh outside air -
ANSWERS✔-20 cubic feet per minute per person in the space
\.ASHRAE - ANSWERS✔-American Society of Heating, Refrigerating and Air-
Conditioning Engineers
\.5 requirements for comfort - ANSWERS✔-proper temperature, humidity,
circulation, filtration, ventilation
\.Dry Bulb Temperature - ANSWERS✔-the measurement of sensible heat
\.Relative Humidity (RH) - ANSWERS✔-the amount of water vapor present in air
expressed as a percentage of the amount needed for saturation at the same
temperature.
\.Dew point(dp) - ANSWERS✔-the temperature below which moisture in the air
begins to condense
\.Enthalpy (h) - ANSWERS✔-The total heat contained in a substance measured
from a baseline of 32 degrees farenheit
QUESTIONS COMPLETE WITH
CORRECT ANSWERS
\.What division is mechanical - ANSWERS✔-Division 23
\.how many Btu/H in a ton - ANSWERS✔-12000
\.What is comfortable relative humidity? - ANSWERS✔-50%
\.Air velocity - ANSWERS✔-the speed at which air moves from one point to
another
\.what is ideal air movement - ANSWERS✔-40fpm
\.What is the most common duct material - ANSWERS✔-sheet metal, measured in
gauge (smaller number thicker material)
\.Why insulate duct work - ANSWERS✔-Condensation
\.What is the average CO2 level for good indoor air quality? - ANSWERS✔-800
, \.Make up air - ANSWERS✔-Air supplied to a space to replace exhausted air
\.exhaust air - ANSWERS✔-Any foul or unwanted air removed from a space by
mechanical means.
\.What is the normal building space requirement for fresh outside air -
ANSWERS✔-20 cubic feet per minute per person in the space
\.ASHRAE - ANSWERS✔-American Society of Heating, Refrigerating and Air-
Conditioning Engineers
\.5 requirements for comfort - ANSWERS✔-proper temperature, humidity,
circulation, filtration, ventilation
\.Dry Bulb Temperature - ANSWERS✔-the measurement of sensible heat
\.Relative Humidity (RH) - ANSWERS✔-the amount of water vapor present in air
expressed as a percentage of the amount needed for saturation at the same
temperature.
\.Dew point(dp) - ANSWERS✔-the temperature below which moisture in the air
begins to condense
\.Enthalpy (h) - ANSWERS✔-The total heat contained in a substance measured
from a baseline of 32 degrees farenheit
