MASTER SET, BOMI ENERGY
MANAGEMENT AND CONTROLS. EXAM
2025 QUESTIONS AND ANSWERS
Define Thermal Energy - ANS Energy associated with the movement of molecules and
measured as heat
Define Electrical Energy - ANS Energy associated with the flow of negatively charged
electrons through a conductive medium.
Define Mechanical Energy - ANS The sum of kinetic and potential energy. Kinetic being the
energy of motion, potential being stored energy.
Define BTU - ANS Quantity of heat possessed by an object is measured in BTU. It is the
amount of heat required to raise temp of one pound of pure water one degree F at sea level.
What is the fundamental law of heat transfer? - ANS heat always flows from an object that is
warmer to an object that is cooler.
What are the three factors affecting amount and rate of heat flow through a building envelope?
- ANS 1. Total surface area
2. Temperature differences
3. Material properties.
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,What are the four factors uses to evaluate the materials that form a building enevlope? -
ANS 1. Thermal Conductivity
2. Thermal Conductance
3. Thermal Resistance
4. Overall Coefficient of heat transfer
What is thermal conductivity? - ANS The measurement of a materials ability to conduct heat.
What is thermal conductance? - ANS A measure of the rate of heat flow through a material
or air space.
What is thermal resistance? - ANS A materials ability to retard heat flow.
What is the overall coefficient of heat transfer? - ANS Resistance value of all building
materials, air spaces, including walls, ceilings and surface air films.
What happens when heat is added to a substance? - ANS It's molecular motion increases.
What is temperature? - ANS The measurement of the intensity of heat.
What does a BTU measure? - ANS The quantity of heat.
What is sensible heat? - ANS heat that when added to or removed from a substance it
changes the temperature of the substance
What is specific heat? - ANS The ratio of the temperature it takes to raise the temperature of
a substance 1 degree to the amount of heat it takes to raise a pound of pure water 1 degree.
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, What is the formula for determining the amount of heat required to change the temperature of
a substance without changing the substances state? - ANS Heat required in BTU - weight in
LB X specific heat X temp change in degrees F.
What is latent heat? - ANS Heat that when added or removed from a substance changes that
substances state, but not its temperature.
What are the standard terms used to describe the change of a substance from one state to
another through the absorption or release of latent heat? - ANS solid to liquid: melting
liquid to solid: fusion
liquid to gas: vaporization
gas to liquid: condensation
What are the three basic processes of heat transfer? - ANS Conduction, Convection,
Radiation
What is conduction? - ANS Heat transfer through matter, molecule to molecule, due to temp
difference
What is convection? - ANS Heat transfer through fluid, typically air or water
What is radiation? - ANS Heat transfer through electromagnetic waves
What is scale formation? - ANS mineral deposits on a metal surface that have precipitated
out of a solution
What happens to a boiler with excessive scaling? - ANS Reduced steam output, excessive fuel
use, increase in stack temp.
COPYRIGHT © 2025 BRAINBARTER ALL RIGHTS RESERVED 3
MANAGEMENT AND CONTROLS. EXAM
2025 QUESTIONS AND ANSWERS
Define Thermal Energy - ANS Energy associated with the movement of molecules and
measured as heat
Define Electrical Energy - ANS Energy associated with the flow of negatively charged
electrons through a conductive medium.
Define Mechanical Energy - ANS The sum of kinetic and potential energy. Kinetic being the
energy of motion, potential being stored energy.
Define BTU - ANS Quantity of heat possessed by an object is measured in BTU. It is the
amount of heat required to raise temp of one pound of pure water one degree F at sea level.
What is the fundamental law of heat transfer? - ANS heat always flows from an object that is
warmer to an object that is cooler.
What are the three factors affecting amount and rate of heat flow through a building envelope?
- ANS 1. Total surface area
2. Temperature differences
3. Material properties.
COPYRIGHT © 2025 BRAINBARTER ALL RIGHTS RESERVED 1
,What are the four factors uses to evaluate the materials that form a building enevlope? -
ANS 1. Thermal Conductivity
2. Thermal Conductance
3. Thermal Resistance
4. Overall Coefficient of heat transfer
What is thermal conductivity? - ANS The measurement of a materials ability to conduct heat.
What is thermal conductance? - ANS A measure of the rate of heat flow through a material
or air space.
What is thermal resistance? - ANS A materials ability to retard heat flow.
What is the overall coefficient of heat transfer? - ANS Resistance value of all building
materials, air spaces, including walls, ceilings and surface air films.
What happens when heat is added to a substance? - ANS It's molecular motion increases.
What is temperature? - ANS The measurement of the intensity of heat.
What does a BTU measure? - ANS The quantity of heat.
What is sensible heat? - ANS heat that when added to or removed from a substance it
changes the temperature of the substance
What is specific heat? - ANS The ratio of the temperature it takes to raise the temperature of
a substance 1 degree to the amount of heat it takes to raise a pound of pure water 1 degree.
COPYRIGHT © 2025 BRAINBARTER ALL RIGHTS RESERVED 2
, What is the formula for determining the amount of heat required to change the temperature of
a substance without changing the substances state? - ANS Heat required in BTU - weight in
LB X specific heat X temp change in degrees F.
What is latent heat? - ANS Heat that when added or removed from a substance changes that
substances state, but not its temperature.
What are the standard terms used to describe the change of a substance from one state to
another through the absorption or release of latent heat? - ANS solid to liquid: melting
liquid to solid: fusion
liquid to gas: vaporization
gas to liquid: condensation
What are the three basic processes of heat transfer? - ANS Conduction, Convection,
Radiation
What is conduction? - ANS Heat transfer through matter, molecule to molecule, due to temp
difference
What is convection? - ANS Heat transfer through fluid, typically air or water
What is radiation? - ANS Heat transfer through electromagnetic waves
What is scale formation? - ANS mineral deposits on a metal surface that have precipitated
out of a solution
What happens to a boiler with excessive scaling? - ANS Reduced steam output, excessive fuel
use, increase in stack temp.
COPYRIGHT © 2025 BRAINBARTER ALL RIGHTS RESERVED 3
