Exam (elaborations)
G2 EXAM PREP QUESTIONS WITH COMPLETE SOLUTIONS
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G2 EXAM PREP QUESTIONS WITH COMPLETE SOLUTIONS
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G2 EXAM PREP QUESTIONS WITHCOMPLETE SOLUTIONS
The nnbest nntool nnfor nnadjusting nnand nnsetting nnthe nnpressure nnon nnan nnappliance
nnregulator:
a.
Manometer
b.
Velometer
c.
Psychrometer
d.
An nnanalyzer nn- nnAnswer nnManometer
3/8 nnNPS nnblack nniron nnpipe nnshall?
a. nnNot nnbe nnused nnfor nnpropane
b. nnNot nnbe nnused nnin nna nnconcealed nnlocation
c. nnNot nnbe nnused nnfor nnnatural nngas
d. nnNot nnbe nnused nnfor nnindoors nn- nnAnswer nnNot nnbe nnused nnin nna nnconcealed
nnlocation nn(6.3.9)
A nncorrugated nnmetal nngas nnconnector nnconnected nnto nna nnrange nnmust nnnot
nnexceed?
a. nn6'
b. nn5'
c. nn3'
d. nn4' nn- nnAnswer nn6' nn(6.21.3)
A nnmanual nnshut-off nnvalve nnshall nnbe nninstalled?
a. nnonly nnon nnnatural nngas nnappliances
b. nnin nneither nndrop nnof nnriser nnof nna nnresidential nnappliance
,c. nndownstream nnof nnthe nnunion
d. nnat nnthe nndrip nnpocket nn- nnAnswer nnIn nneither nndrop nnof nnriser nnof nna nnresidential
nnappliance nn(6.18.2)
Black nniron nnpipe nn2 nn1/2 nnNPS nnat nn150' nnlong nnshall nnbe nnpressure nntested nnto?
a. nnThe nngreater nnof nn50psig nnor nn1.5 nntimes nnthe nnmaximum nnoperation nnpressure
nnfor nn180 nnminutes
b. nn50 nnpsig nnfor nn180 nnminutes
c. nn1.5 nntimes nnthe nnmaximum nnoperation nnpressure nnfor nn180 nnminutes
d. nn50 nnpsig nnfor nn60 nnminutes nn- nnAnswer nn50 nnpsig nnfor nn60 nnminutes nn(Table
nn6.3)
Buried nnpiping nnor nntubing nnshall nnbe?
a. nnonly nncopper nntype nnL nncoated, nntype nnG nncoated, nntype nnK nnuncoated
b. nnonly nncopper nntype nnK, nnL nnor nntype nnG
c. nnschedule nn50 nnASTM nnA-53
d. nnonly nncopper nntype nnL nnor nnG nncoated nn- nnAnswer nnOnly nncopper nntype nnL
nncoated, nntype nnG nncoated, nntype nnK nnuncoated nn(6.2.7)
What nnis nnpressure nndrop?
a. nnThe nndifference nnin nnthe nnstatic nnpressure nnat nnthe nnmeter, nnand nnthe nnworking
nnpressure nnat nnthe nnappliance nnregulator
b. nnThe nndifference nnbetween nnthe nnU nntube nnmanometer nnis nnthe nnend nnthat nnis
nnopen nnto nnthe nnatmosphere nnand nnthe nnpressurized nnside nnwhen nnthe nnappliance
nnregulator nnis nnworking
c. nnThe nndifference nnbetween nnsupply nnpressure nnand nnappliance nnmanifold
nnpressure nnwhen nnthe nnappliance nncalls nnfor nnheat
d. nnThe nndifference nnin nnthe nnworking nnpressure nnat nnthe nngas nnmeter, nnand nnthe
nnworking nnpressure nnat nnthe nnappliance nnregulator nn- nnAnswer nnThe nndifference nnin
nnthe nnworking nnpressure nnat nnthe nngas nnmeter, nnand nnthe nnworking nnpressure nnat
nnthe nnappliance nnregulator
Fittings nnused nnfor nnsteel nnpiping nnmay nnbe nnmade nnfrom?
a. nnbrass nnor nniron
b. nncopper nnto nnmalleable nniron
c. nnsteel nnand nnplastic
d. nnmalleable nniron nnand nnsteel nn- nnAnswer nnMalleable nniron nnand nnsteel nn(6.2.2)
Posts nnprotecting nnpiping nnand nntubing nnentering nna nnbuilding nnfrom nnvehicular
nndamage nnshall nnbe?
a. nnclearly nnmarked nnand nnidentified nnwith nnyellow nnpaint
,b. nnBe nnspaced nnnot nnmore nnthan nn48" nnapart
c. nnBuried nnnot nnless nnthan nn36" nnbelow nngrade
d. nnMade nnfrom nn6x6 nnpressure nntreated nnwood nn- nnAnswer nnBuried nnnot nnless
nnthan nn36" nnbelow nngrade
(6.16.15)
The nnequivalent nnlength nnof nna nn2 nn1/2 nnNPS nnforged nntee nnis?
a. nn9.25'
b. nn12.4'
c. nn15.3'
d. nn10.3' nn- nnAnswer nn9.25' nn(Table nnA nn16)
What nnis nnthe nnmaximum nnhorizontal nnspacing nnof nnsupports nnfor nnN.P.S. nn1 nn1/4
nninch nngas nnpipe?
a. nn8'
b. nn15'
c. nn6'
d. nn10' nn- nnAnswer nn10' nn(3m) nn(Table nn6.2)
When nngas nnpiping nnenters nna nnbuilding, nnit nnmust?
a. nnEnter nnabove nngrade
b. nnBe nntaped, nnpainted, nnand nnsleeved
c. nnHave nna nntracer nnwire
d. nnEnter nnbelow nngrade nn- nnAnswer nnEnter nnabove nngrade nn(6.15.8)
When nnsizing nna nnbranch nnline, nnwhat nnis nnthe nnminimum nnsize nnof nnjob nnfabricated
nnwelding nnfittings nnthat nncan nnbe nnused nnon nna nnNPS nn6 nngas nnsupply nnheader?
a. nn2" nnNPS
b. nn3/4" nnNPS
c. nn3" nnNPS
d. nn1/2" nnNPS nn- nnAnswer nn3/4" nnNPS nn(6.8.8)
A nndirt nnpockets nnshall nnbe nninstalled nnat nnthe nnbottom nnof nnany nnpiping nnor nntubing,
nnon nnthe nnfinal nndrop nnserving nnan nnappliance nnother nnthan nna(n)
a. nnUnit nnHeater
b. nnFurnace
c. nnClothes nndryer
d. nnBoiler nn- nnAnswer nnClothes nndryer nn(6.13.1)
Direct-vent nnwall nnfurnace nnshall nnuse nnwhat nnmaximum nnlength nnof nncorrugated
nnmetal nngas nnconnector?
, a. nn6 nnft.
b. nn4 nnft.
c. nn8 nnft.
d. nn2 nnft. nn- nnAnswer nn2 nnft. nn(6.21.3(c))
Every nngas nnhose nnand nngas nnfitting nnshall nnhave nna nnminimum nnworking nnpressure
nnof nnwhat.
a. nn275 nnPSIG nnminimum nnor nnthe nnsetting nnof nnthe nnhydrostatic nnrelief nnvalves.
b. nn350 nnPSIG nnfor nnpiping nnand nntubing nnoperating nnat nna nncontainer.
c. nn350 nnPSIG
d. nn250 nnPSIG nnwhen nnconnected nnto nnthe nnoutlet nnof nna nnpump nnor nncompressor.
nn- nnAnswer nn350 nnPSIG nn(6.2.9)
What nnare nnthe nnrequirements nnfor nnback nnfilling nnunderground nnpiping nnor nntubing?
a. nnIt nnshall nnnot nnhave nnstones nnlarger nnthan nn38 nnmm
b. nnThe nnfill nnmaterial nnshall nncontain nnno nnsharp nnobjects.
c. nnA nntrench nnmust nnbe nndug nn15 nninches nndeep
d. nnAll nnof nnthe nnchoices nn- nnAnswer nnThe nnfill nnmaterial nnshall nncontain nnno nnsharp
nnobjects nn(6.15.6)
Question nn17
What nnis nnthe nnapproximate nnpurging nntime nnfor nnNPS nn1 nnthat nnis nn40 nnfeet nnin
nnlength?
a. nn7 nnSeconds
b. nn28 nnSeconds
c. nn14 nnSeconds
d. nn43 nnSeconds nn- nnAnswer nn28 nnseconds nn(Annex nnH nnTable nnH.1)
What nnis nnthe nnmaximum nndistance nna nnreadily nnaccessible nnmanual nnshut-off nnvalve
nnmay nnbe nninstalled nnfrom nnan nnappliance?
a. nn2 nnft. nnand nnidentified
b. nn10 nnft. nnand nnidentified
c. nn25 nnft. nnand nnidentified
d. nn50 nnft. nnand nnidentified nn- nnAnswer nn50 nnft. nnand nnidentified nn(6.18.2(d))
What nnis nnthe nnminimum nnunthreaded nnportion nnof nna nnpiping nnoutlet nnrequired
nnwhen nninstalling nna nngas nnpiping nnthrough nna nnfloor nnfor nna nnrange?
a. nn2 nnInches
b. nn6 nnInches
c. nn3 nnInches
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