CEM Body of Knowledge & Study
Guide v1.5 - Exam Review
Questions and Answers 100%
Solved
WhatAisAtheAbasisAforACommercialABuildingACodesAbyAmostAstates?
A.AASHRAEA90.2
B.AASHRAEA90.1
C.AASHRAEA62.2
D.AASHRAEA60.1A-AAnswerAAnswer:
B.AASHRAEA90.1A-AEnergyAStandardAforASitesAandABuildingsAExceptALow-
RiseAResidentialABuildings
Standards:
ASHRAEA90.2A-AEnergy-EfficientADesignAofALow-RiseAResidentialABuildings
ASHRAEA62.1A-AVentilationAandAAcceptableAIndoorAAirAQuality
ASHRAEA62.2A-AVentilationAandAAcceptableAIndoorAAirAQualityAinAResidentialABuildings
ASHRAEAStandardA55AhasArulesAfor:
A.AVentilationAforAacceptableAindoorAairAquality
B.AEnergyAstandardAforAbuildingsAexceptAlowAriseAresidentialAbuildings
C.AThermalAenvironmentalAconditionsAforAhumanAoccupancy
D.AAllAofAtheAaboveA-AAnswerAAnswer:
C.AThermalAenvironmentalAconditionsAforAhumanAoccupancy
ASHRAEA55A-AThermalAEnvironmentalAConditionsAforAHumanAOccupancy
IfAelectricityAisAsellingAforA$0.06AperAKW-
hrAandAisAusedAforAelectricAheatingAwithAanAefficiencyAofA90%AwhatAisAtheAequivalentApric
eAofAnaturalAgasAperAthermAifAitAcanAbeAburnedAwithAanAefficiencyAofA80%?
A.A$1.33/therm
, B.A$1.47/therm
C.A$1.56/therm
D.A$1.65/therm
E.A$1.87/thermA-AAnswerAC.A$1.56/therm
EnergyAManagementAHandbookA7thAedition:
EnergyACostA=ALoadAxA1/efficiencyAxAfuelAcost
EnergyACost/loadA=A1/0.9AxA$0.06/kw-hrAxA29.3Akw-hr/therm
EnergyACost/loadA=A$1.953/thermA=A1/0.8AxAfuelAcost
fuelAcostA=A$1.56/therm
AnAenergyAsavingAdeviceAwillAsaveA$25,000AperAyearAforA8Ayears.AHowAmuchAcanAaAcompa
nyApayAforAthisAdeviceAifAtheAinterestArateA(discountArate)AisA15%?
A.A$10,000
B.A$77,000
C.A$112,000
D.A$173,000A-AAnswerAC.A$112,000
PA=ApresentAvalue
AA=AsingleApaymentAorAinterestAreceivedAinAaAseriesAofAnAequalAannualApayments
iA=AAnnualAinterestArateA=AMARR
nA=AtheAnumberAofAannualAinterestAperiods
A
PA=AAA*A[(1+i)^nA-A1A/Ai(1+i)^nA]
PA=A25,000A*A[(1+0.15)^8A-A1A/A0.15(1+0.15)^8]
WhatAwouldAbeAusedAtoAfindAhotAspotsAorAphaseAimbalancesAinAanAACAcircuit?
A.AOhmmeter
B.AInfraredACamera
C.AWattmeter
D.AAllAofAtheAaboveA-AAnswerAAnswer:
Guide v1.5 - Exam Review
Questions and Answers 100%
Solved
WhatAisAtheAbasisAforACommercialABuildingACodesAbyAmostAstates?
A.AASHRAEA90.2
B.AASHRAEA90.1
C.AASHRAEA62.2
D.AASHRAEA60.1A-AAnswerAAnswer:
B.AASHRAEA90.1A-AEnergyAStandardAforASitesAandABuildingsAExceptALow-
RiseAResidentialABuildings
Standards:
ASHRAEA90.2A-AEnergy-EfficientADesignAofALow-RiseAResidentialABuildings
ASHRAEA62.1A-AVentilationAandAAcceptableAIndoorAAirAQuality
ASHRAEA62.2A-AVentilationAandAAcceptableAIndoorAAirAQualityAinAResidentialABuildings
ASHRAEAStandardA55AhasArulesAfor:
A.AVentilationAforAacceptableAindoorAairAquality
B.AEnergyAstandardAforAbuildingsAexceptAlowAriseAresidentialAbuildings
C.AThermalAenvironmentalAconditionsAforAhumanAoccupancy
D.AAllAofAtheAaboveA-AAnswerAAnswer:
C.AThermalAenvironmentalAconditionsAforAhumanAoccupancy
ASHRAEA55A-AThermalAEnvironmentalAConditionsAforAHumanAOccupancy
IfAelectricityAisAsellingAforA$0.06AperAKW-
hrAandAisAusedAforAelectricAheatingAwithAanAefficiencyAofA90%AwhatAisAtheAequivalentApric
eAofAnaturalAgasAperAthermAifAitAcanAbeAburnedAwithAanAefficiencyAofA80%?
A.A$1.33/therm
, B.A$1.47/therm
C.A$1.56/therm
D.A$1.65/therm
E.A$1.87/thermA-AAnswerAC.A$1.56/therm
EnergyAManagementAHandbookA7thAedition:
EnergyACostA=ALoadAxA1/efficiencyAxAfuelAcost
EnergyACost/loadA=A1/0.9AxA$0.06/kw-hrAxA29.3Akw-hr/therm
EnergyACost/loadA=A$1.953/thermA=A1/0.8AxAfuelAcost
fuelAcostA=A$1.56/therm
AnAenergyAsavingAdeviceAwillAsaveA$25,000AperAyearAforA8Ayears.AHowAmuchAcanAaAcompa
nyApayAforAthisAdeviceAifAtheAinterestArateA(discountArate)AisA15%?
A.A$10,000
B.A$77,000
C.A$112,000
D.A$173,000A-AAnswerAC.A$112,000
PA=ApresentAvalue
AA=AsingleApaymentAorAinterestAreceivedAinAaAseriesAofAnAequalAannualApayments
iA=AAnnualAinterestArateA=AMARR
nA=AtheAnumberAofAannualAinterestAperiods
A
PA=AAA*A[(1+i)^nA-A1A/Ai(1+i)^nA]
PA=A25,000A*A[(1+0.15)^8A-A1A/A0.15(1+0.15)^8]
WhatAwouldAbeAusedAtoAfindAhotAspotsAorAphaseAimbalancesAinAanAACAcircuit?
A.AOhmmeter
B.AInfraredACamera
C.AWattmeter
D.AAllAofAtheAaboveA-AAnswerAAnswer:
