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Exam (elaborations)

BOMA-HVAC QUESTIONS WITH CORRECT ANSWERS

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BOMA-HVAC QUESTIONS WITH CORRECT ANSWERS

Institution
BOMA-HVAC
Course
BOMA-HVAC

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BOMA-HVAC QUESTIONS WITH CORRECT
ANSWERS



laminar flow - (correct answer) -- A streamline or viscous flow.
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- layers of water flowing over one another at different speeds with virtually no mixing between layers.
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- Fluid particles move in definite and observable paths or stream lines.
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- The flow is characteristic of viscous (thick) fluid or is one in which viscosity of the fluid plays a significant part.
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turbulent flow - (correct answer) -Irregular movement of particles of the fluid. ti ti ti ti ti ti ti ti ti ti ti




What do you use to determine quantity of air flowing through the duct? - (correct answer) -CFM
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What do you use to determine the speed, rate or velocity of air flow through a duct? - (correct answer) -FPM
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What is the standard that had been used in determining the amount of airflow in relation to refrigeration effect
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(tonnage)? - (correct answer) -400 CFM per ton of cooling
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What is it recommended that you keep your facilities humidity levels? - (correct answer) -30%-50%
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Try to aim for 45%
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What are the recommended summer and winter temperatures? - (correct answer) -Summer- 73 to 79
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Winter- 68 to 74 ti ti ti




Metabolic rate - (correct answer) -Everybody produces heat differently ti ti ti ti ti ti ti ti




Psychrometry - (correct answer) -- Looking at the interaction (relationship) of the moisture ( humidity) and the air ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti




itself.
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- how the air is moving or transferring heat through the building.
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Dry Bulb - (correct answer) -The temperature reading found on a typical thermometer.
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Wet Bulb - (correct answer) -A typical thermometers standard reading if the sensing bulb is covered with a wet wick
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or sock and exposed to air flow.
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Dew Point - (correct answer) --At this temperature, moisture starts condensing from the air.
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-used to define the level that air can no longer hold extra moisture, it has reached 100% capacity.
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Specific Volume & Density - (correct answer) -- measured in cubic feet per pound.
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- The amount of space air occupies per pound of weight.
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Enthalpy ( heat content of a substance) - (correct answer) --The measurement of heat energy.
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- measured by BTU.
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Sensible heat ratio - (correct answer) -The total sensible heat flow divided by the total heat flow
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Sensible heat flow - (correct answer) -Supply air temperature minus conditioned room temperature
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