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HVAC BOMA 501 CORRECT 100%
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  • BOMA - Instrumentation & Controls

Dual Duct System - 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 - ANSWER an a/c system in which the zone control is obt...

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  • November 3, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • BOMA - Instrumentation & Controls
  • BOMA - Instrumentation & Controls

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HVAC BOMA 501 CORRECT 100%

Dual Duct System - 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 - 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 - ANSWER take the sensible heat and the latent heat into consideration



which of the following does not provide sensible heat gain? - 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? - 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... - 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 - ANSWER false



the human body's feeling of well being depends upon.... - ANSWER The body's metabolism



which of the following natural laws has the greatest bearing on the science of air conditioning? -
ANSWER Boyles' Law, Charles' Law, Dalton's Law



Why is a pitch pocket commonly used? - 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? - ANSWER a
cooling tower governed by web bulb temperature



What is the first step taken in all troubleshooting processes? - ANSWER Analyze the complaint



If the complaint is 'too little heat' and the burner is short-cycling the most likely cause is.... - ANSWER the
thermostat is out of adjustment



Excessive combustion noise is most likely caused by.... - ANSWER improper burner adjustment



When a complaint is "too much heat" and the burner is continuously running the most likely cause is.... -
ANSWER faulty wiring



In a case of failure of a burner to start the most likely cause is.... - ANSWER a blown fuse



what is the most probable cause of a burner to not start? - ANSWER power failure



when the complaint is 'too much heat' and the heat element operates continuously the most likely cause
is.... - ANSWER faulty control wiring



if the complaint is 'too much heat' and the electrical wiring is short-cycling the most likely cause is... -
ANSWER the thermostat heat anticipator is set too low



In case of an electrical heating system not starting, the most likely cause is... - ANSWER a blown fuse



A psychrometric chart is a graph representation of... - ANSWER thermodynamic properties



Heat flows in one direction usually from.... - ANSWER a position of higher temperature to a position of
lower temperature



the three main ways heat transfer takes place are... - ANSWER convection, conduction, radiation

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