BOMA-HVAC LATEST UPDATE 2024
The man whose work is considered the real beginning of the science of air-conditioning _____. -
ANSWER Willis Carrier
Psychrometry refers to the relationship between _____ and _____. - ANSWER Humidity; air
The amount of moisture in the air compared to how much it can hold is _____. - ANSWER Relative
humidity
The human bodies well being depends upon the _____. - ANSWER Bodies metabolism
The device used to determine the moisture content of air is the _____ - ANSWER psychrometer
Of the fuels listed the one that is the most efficient is _____. - ANSWER Gas
The effective temperature takes into consideration the effect of _____ and _____. - ANSWER Humidity;
temperature
Air conditioning is the control of the _____, _____, _____ and _____. - ANSWER Temperature, humidity,
purity and distribution of air.
The element that makes up the greatest percentage by volume of air is _____. - ANSWER Nitrogen
Steam gives off a great amount of heat because of its _____. - ANSWER Specific heat
The velocity of air moving thru a fan system is expressed in _____. - ANSWER Feet per minute
What volume of air will move thru a duct 24x18 at velocity of 450 feet per minute? - ANSWER 1350 cfm
, The following types of fans are classified as centrifugal fans. - ANSWER Forward curved, radial and
backward curved
A diulating switch is used to _____. - ANSWER Change proportional action to two position control.
A ratio relay is used to _____. - ANSWER Provide sequence control of more than one actuator.
A proportional control: - ANSWER Where a movement from the set point produces a proportional
movement of the actuator
A three way diverting valve: - ANSWER has two outlets and one common inlet
Heat will continue to flow between two bodies until they have the same amount of _____. - ANSWER
Sensible heat
Heat which causes a change of state is _____. - ANSWER Latent heat
The refrigeration effect of a refrigerant is improved by _____. - ANSWER Subcooling the liquid.
In the refrigeration cycle, the medium that picks up the heat is the _____. - ANSWER refrigerant.
A heat exchanger _____. - ANSWER Subcools the liquid refrigerant
Calculations involving heat load of people takes into consideration heat due to _____ and _____. -
ANSWER Latent heat; sensible heat
The flow control device used to maintain system temperature is the _____. - ANSWER Evaporator
pressure valve
The man whose work is considered the real beginning of the science of air-conditioning _____. -
ANSWER Willis Carrier
Psychrometry refers to the relationship between _____ and _____. - ANSWER Humidity; air
The amount of moisture in the air compared to how much it can hold is _____. - ANSWER Relative
humidity
The human bodies well being depends upon the _____. - ANSWER Bodies metabolism
The device used to determine the moisture content of air is the _____ - ANSWER psychrometer
Of the fuels listed the one that is the most efficient is _____. - ANSWER Gas
The effective temperature takes into consideration the effect of _____ and _____. - ANSWER Humidity;
temperature
Air conditioning is the control of the _____, _____, _____ and _____. - ANSWER Temperature, humidity,
purity and distribution of air.
The element that makes up the greatest percentage by volume of air is _____. - ANSWER Nitrogen
Steam gives off a great amount of heat because of its _____. - ANSWER Specific heat
The velocity of air moving thru a fan system is expressed in _____. - ANSWER Feet per minute
What volume of air will move thru a duct 24x18 at velocity of 450 feet per minute? - ANSWER 1350 cfm
, The following types of fans are classified as centrifugal fans. - ANSWER Forward curved, radial and
backward curved
A diulating switch is used to _____. - ANSWER Change proportional action to two position control.
A ratio relay is used to _____. - ANSWER Provide sequence control of more than one actuator.
A proportional control: - ANSWER Where a movement from the set point produces a proportional
movement of the actuator
A three way diverting valve: - ANSWER has two outlets and one common inlet
Heat will continue to flow between two bodies until they have the same amount of _____. - ANSWER
Sensible heat
Heat which causes a change of state is _____. - ANSWER Latent heat
The refrigeration effect of a refrigerant is improved by _____. - ANSWER Subcooling the liquid.
In the refrigeration cycle, the medium that picks up the heat is the _____. - ANSWER refrigerant.
A heat exchanger _____. - ANSWER Subcools the liquid refrigerant
Calculations involving heat load of people takes into consideration heat due to _____ and _____. -
ANSWER Latent heat; sensible heat
The flow control device used to maintain system temperature is the _____. - ANSWER Evaporator
pressure valve
