HVAC BOMA 501 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Dual Duct System - CORRECT ANSWER A system in which hot air and cold air are
supplied by separate ducts and mixed at each controlled space to provide the desired supply air
temperature. This method consumes a great deal of energy.
Muiltizone System - CORRECT ANSWER an a/c system in which the zone control is
obtained by mixing hot and cold air at the unit in response to a room thermostat
Load Calulations - CORRECT ANSWER take the sensible heat and the latent heat into
consideration
which of the following does not provide sensible heat gain? - CORRECT ANSWER Heat
from cooking or hot baths (latent heat has to do with moisture)
Which of the following is the way that solar radiation disperses in a building? - CORRECT
ANSWER Transmitted directly to the interior of the building, absorbs by glass, reflected
into the building
outside air may get into the air conditioning spaces by... - CORRECT
ANSWER infiltration through the walls, infiltration through the swinging doors, air
induced by replaced exhaust
In commercial buildings heat generated by lights does not seriously affect the control of the
heating system - CORRECT ANSWER false
the human body's feeling of well being depends upon.... - CORRECT ANSWER The
body's metabolism
which of the following natural laws has the greatest bearing on the science of air conditioning? -
CORRECT ANSWER Boyles' Law, Charles' Law, Dalton's Law
, Why is a pitch pocket commonly used? - CORRECT ANSWER To protect the piping and
seal the roof from refrigeration lines passing through it
Which of the following is an evaporative type condenser and what governs its cooling? -
CORRECT ANSWER a cooling tower governed by web bulb temperature
on an evaporative condenser what is the purpose of the eliminator - CORRECT
ANSWER to separate the moisture carry over
specific heat of a substance - CORRECT ANSWER the amount of heat necessary to raise
the temperature of one pound of a substance one degree Fahrenheit
Latent Heat - CORRECT ANSWER the amount of heat necessary to change a liquid to a
vapor with no change in temperature
The difference between a pump, a fan and a compressor is.... - CORRECT
ANSWER pumps pump liquid, fans and compressors pump air
Which of the following checks should be made of a blower-drive? - CORRECT
ANSWER Check the blower belts for cracks and wear, check the motor bearings for wear,
check the blower bearings for wear
Which of the following is a good rule to follow when checking air filters? - CORRECT
ANSWER air filters should be of the size and type recommended by the equipment
manufacturer
When one of the three phases of a motor fails, how will the motor react? - CORRECT
ANSWER A winding will run hotter, the motor will (generally) not start, the two phases
will draw 1.5 (1 1/2) times more current
Exam Questions and CORRECT Answers
Dual Duct System - CORRECT ANSWER A system in which hot air and cold air are
supplied by separate ducts and mixed at each controlled space to provide the desired supply air
temperature. This method consumes a great deal of energy.
Muiltizone System - CORRECT ANSWER an a/c system in which the zone control is
obtained by mixing hot and cold air at the unit in response to a room thermostat
Load Calulations - CORRECT ANSWER take the sensible heat and the latent heat into
consideration
which of the following does not provide sensible heat gain? - CORRECT ANSWER Heat
from cooking or hot baths (latent heat has to do with moisture)
Which of the following is the way that solar radiation disperses in a building? - CORRECT
ANSWER Transmitted directly to the interior of the building, absorbs by glass, reflected
into the building
outside air may get into the air conditioning spaces by... - CORRECT
ANSWER infiltration through the walls, infiltration through the swinging doors, air
induced by replaced exhaust
In commercial buildings heat generated by lights does not seriously affect the control of the
heating system - CORRECT ANSWER false
the human body's feeling of well being depends upon.... - CORRECT ANSWER The
body's metabolism
which of the following natural laws has the greatest bearing on the science of air conditioning? -
CORRECT ANSWER Boyles' Law, Charles' Law, Dalton's Law
, Why is a pitch pocket commonly used? - CORRECT ANSWER To protect the piping and
seal the roof from refrigeration lines passing through it
Which of the following is an evaporative type condenser and what governs its cooling? -
CORRECT ANSWER a cooling tower governed by web bulb temperature
on an evaporative condenser what is the purpose of the eliminator - CORRECT
ANSWER to separate the moisture carry over
specific heat of a substance - CORRECT ANSWER the amount of heat necessary to raise
the temperature of one pound of a substance one degree Fahrenheit
Latent Heat - CORRECT ANSWER the amount of heat necessary to change a liquid to a
vapor with no change in temperature
The difference between a pump, a fan and a compressor is.... - CORRECT
ANSWER pumps pump liquid, fans and compressors pump air
Which of the following checks should be made of a blower-drive? - CORRECT
ANSWER Check the blower belts for cracks and wear, check the motor bearings for wear,
check the blower bearings for wear
Which of the following is a good rule to follow when checking air filters? - CORRECT
ANSWER air filters should be of the size and type recommended by the equipment
manufacturer
When one of the three phases of a motor fails, how will the motor react? - CORRECT
ANSWER A winding will run hotter, the motor will (generally) not start, the two phases
will draw 1.5 (1 1/2) times more current
