HVAC Exam Questions And Answers
With Correct Update
Refrigeration f- fAnswer f- fprocess fof fmoving fheat ffrom fan farea fwhere fit fis fundesirable fto fan farea fwhere
fheat fis fpreferred
Refrigeration fSystem f- fAnswer f- fa fclosed fsystem fthat fcontrols fthe fpressure fand ftemperature fof fthe
frefrigerant fto fregulate fthe fabsorption fand frejection fby frefrigerants
A fton fof fcooling fis fequal fto f_____________ fBtu/hr. f- fAnswer f- f12,000
For fmaximum fcomfort, ftemperature fcontrol fequipment fmaintain fair ftemperature fin fa fbuilding
fwithin____ fF for f____F fof fthe ftemperature fnecessary fof fcomfort. f- fAnswer f- f1;2
Comfort fis fusually fattained fat fnormal fcooling fand fheating ftemperature fwith fa frelative fhumidity fof fabout
f____%. f- fAnswer f- f50
____ flevel fis fcontrolled fby fhumidifiers fand fdehumidifiers. f- fAnswer f- fHumidity
A___ fis fa fdevice fthat fremoves fmoisture ffrom fair fby fcausing fmoisture fto fcondense. f- fAnswer f-
fDehumidifier
____is fthe fmovement fof fair. f- fAnswer f- fCirculation
Common freasons ffor fpoor findoor fair fquality fin fbuilding fspaces fare____. f- fAnswer f- fAir fpollutant fsources f
Poor fventilation f
Unanticipated fbuilding fuses
Comfort f- fAnswer f- fis fthe fcondition fthat foccurs fwhen fa fperson fcannot fsense fa fdifference fbetween
fthemselves fand fthe fsurround fair.
One fpound fof fdry fair fand fits fassociated fmoisture fat fstandard fconditions fhas fa fpressure fof f(blank) fHG f-
fAnswer f- f29.92
(Blank) fdirectly frelates fto fthe famount fof fmoisture fin fthe fair f- fAnswer f- fWet fbulb ftemperature, fhumidity
fratio, frelative fhumidity
A fchange fin fboth fdry fbulb fand fwet fbulb ftemperatures faffects f(blank). f- fAnswer f- fEnthalpy
On fa fchart ffor fstandard fconditions, fhumidity fratio fbegins fat f0 flb fof fmoisture fper fpound fof fdry fair fand
fincreases fto fabout f(blank) flb fof fmoisture fper fpound fof fdry fair. f- fAnswer f- f.03
Engineers fand fair fconditioning ftechnicians fuse f(blank) fto fdefine fproperties fof fmoist fair fduring fprocesses
fthat fchange fthe fproperties fof fair. f- fAnswer f- fPsychrometric fcharts
With Correct Update
Refrigeration f- fAnswer f- fprocess fof fmoving fheat ffrom fan farea fwhere fit fis fundesirable fto fan farea fwhere
fheat fis fpreferred
Refrigeration fSystem f- fAnswer f- fa fclosed fsystem fthat fcontrols fthe fpressure fand ftemperature fof fthe
frefrigerant fto fregulate fthe fabsorption fand frejection fby frefrigerants
A fton fof fcooling fis fequal fto f_____________ fBtu/hr. f- fAnswer f- f12,000
For fmaximum fcomfort, ftemperature fcontrol fequipment fmaintain fair ftemperature fin fa fbuilding
fwithin____ fF for f____F fof fthe ftemperature fnecessary fof fcomfort. f- fAnswer f- f1;2
Comfort fis fusually fattained fat fnormal fcooling fand fheating ftemperature fwith fa frelative fhumidity fof fabout
f____%. f- fAnswer f- f50
____ flevel fis fcontrolled fby fhumidifiers fand fdehumidifiers. f- fAnswer f- fHumidity
A___ fis fa fdevice fthat fremoves fmoisture ffrom fair fby fcausing fmoisture fto fcondense. f- fAnswer f-
fDehumidifier
____is fthe fmovement fof fair. f- fAnswer f- fCirculation
Common freasons ffor fpoor findoor fair fquality fin fbuilding fspaces fare____. f- fAnswer f- fAir fpollutant fsources f
Poor fventilation f
Unanticipated fbuilding fuses
Comfort f- fAnswer f- fis fthe fcondition fthat foccurs fwhen fa fperson fcannot fsense fa fdifference fbetween
fthemselves fand fthe fsurround fair.
One fpound fof fdry fair fand fits fassociated fmoisture fat fstandard fconditions fhas fa fpressure fof f(blank) fHG f-
fAnswer f- f29.92
(Blank) fdirectly frelates fto fthe famount fof fmoisture fin fthe fair f- fAnswer f- fWet fbulb ftemperature, fhumidity
fratio, frelative fhumidity
A fchange fin fboth fdry fbulb fand fwet fbulb ftemperatures faffects f(blank). f- fAnswer f- fEnthalpy
On fa fchart ffor fstandard fconditions, fhumidity fratio fbegins fat f0 flb fof fmoisture fper fpound fof fdry fair fand
fincreases fto fabout f(blank) flb fof fmoisture fper fpound fof fdry fair. f- fAnswer f- f.03
Engineers fand fair fconditioning ftechnicians fuse f(blank) fto fdefine fproperties fof fmoist fair fduring fprocesses
fthat fchange fthe fproperties fof fair. f- fAnswer f- fPsychrometric fcharts
