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5/14/2018 Definisi Las - slidepdf.com
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 7
KG]
G. Pencervagn Kg}
Pencekg}gn $sekfanc! gfgkgd }gkgd }gkgd }gvu velnal penqgjbuncgn khcgj fencgn mgrg
jenmgarlgn }ebgcagn khcgj anful fgn khcgj penca}a fencgn gvgu vgnpg velgngn fgn
fencgn gvgu vgnpg khcgj pengjbgd fgn jencdg}aklgn }gjbuncgn qgnc mhnvanue.
Kanclup penccunggn velnal pencekg}gn fgkgj lhnvrul}a }gncgv kug}+ jekapuva perlgpgkgn+
oejbgvgn+ rgnclg bgog+ beogng velgn+ papg pe}gv+ papg }gkurgn fgn }ebgcganqg.
Fa}gjpanc unvul pejbugvgn+ prh}e} kg} fgpgv oucg fapercunglgn unvul repgrg}a ja}gknqg
unvul jenca}a kubgnc*kubgnc pgfg mhrgn. Jejbugv kgpa}gn kg} pgfg perlglg} jejpervebgk
bgcagn*bgcagn qgnc }ufgd gu} fgn jgmgj*jgmgj repgrg}a kgannqg.
Pencekg}gn bulgn vuougn uvgjg fgra lhnvrul}a+ vevgpa dgnqg jerupglgn }grgng unvul
jenmgpga elhnhja pejbugvgn qgnc kebad bgal. Lgreng avu rgnmgncgn kg} fgn mgrg
pencekg}gn dgru} bevuk*bevuk jejperdgvalgn fgn jejperkadgvlgn le}e}ugagn gnvgrg }aigv*
}aigv kg}fencgn lecunggn lhnvrul}a }ervg lecunggn fa}elavgrnqg.
Prh}efur pencekg}gn lekadgvgnnqg }gncgv }eferdgng+ vevgpa }ebengrnqg fa fgkgjnqg bgnqgl
jg}gkgd*jg}gkgd qgnc dgru} fagvg}a fajgng pejemgdgnnqg jejerkulgn berjgmgj*jgmgj
penncevgdugn.
Lgreng avu fa fgkgj pencekg}gn+ penncevgdugn dgru} vuruv }ervg jenfgjpanca prglvel+
}emgrg kebad verperanma fgpgv falgvglgn bgdsg pergnmgncgn lhnvrul}a bgncungn fgn je}an
fencgn }gjbuncgn kg}+ dgru} farenmgnglgn pukg venvgnc mgrg*mgrg pencekg}gn. Mgrg ana
pejeral}ggn+ bgdgn kg} fgn oena} kg} qgnc glgn facunglgn+ berfg}grlgn iunc}a fgra bgcagn*
bgcagn bgncungn gvgu je}an qgnc fargnmgnc.
Berfg}grlgn feiana}a fgra FAN $Feuvmd Anfu}vrae Nhrjen! kg} gfgkgd algvgn jevgkurca pgfg
}gjbuncgn khcgj pgfugn qgnc fakgl}gnglgn fgkgj legfggn kujer gvgu mgar. Fgra feiana}a
ver}ebuv fgpgv faogbgrlgn kebad kgnouv bgdsg kg} gfgkgd }gjbuncgn }evejpgv fgra bebergpg
bgvgnc khcgj fencgn jenccunglgn enerca pgng}. Pgfg sglvu ana vekgd fapercunglgn kebad
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 2
fgra 60 oena} pencekg}gn verjg}ul pencekg}gn qgnc fakgl}gnglgn fencgn mgrg jenelgn fug
khcgj qgnc fa}gjbunc }edanccg verogfa algvgn gnvgrg gvhj*gvhj jhkeluk fgra khcgj qgnc
fa}gjbunclgn.lkg}aialg}a fgra mgrg*mgrg pencekg}gn ana glgn favergnclgn kebad kgnouv.
Pgfg sglvu ana pencekg}gn fgn pejhvhncgn jerupglgn pencekg}gn penceroggn qgnc gjgv
penvanc fgkgj velnhkhca prhful}a fencgn bgdgn bglu khcgj. Fgra pervgjg
perlejbgncgnnqg }gncgv pe}gv vekgd bgnqgl velnhkhca bgru qgnc favejulgn. ]edanccg
bhked falgvglgn dgjper vafgl gfg khcgj qgnc fgpgv faphvhnc fgn fa kg} fencgn mgrg*mgrg
qgnc gfg pgfg sglvu ana.
B. Lkg}aialg}a Mgrg*mgrg Pencekg}gn fgn Pejhvhncgn
]gjpga pgfg sglvu ana bgnqgl }elgka mgrg*mgrg penclkg}aialg}agn qgnc facunglgn fgkgj
bafgnc kg}+ ana fa}ebgblgn lgreng perku gfgnqg le}epglgvgn fgkgj dgk*dgk ver}ebuv. ]emgrg
lhnyen}ahngk mgrg*mgrg penclkg}aialg}a ver}ebuv pgfg sglvu ana fgpgv fabgca fug chkhncgn+
qgavu lkg}aialg}a berfg}grlgn lerog fgn lkg}aialg}a berfg}grlgn enerca qgnc facunglgn.
Lkg}aialg}a pervgjg jejbgca kg} fgkgj lekhjphl kg} mgar+ kg} velgn+ kg} pgvra fgn kgan*
kgannqg. ]efgnclgn lkg}aialg}a qgnc lefug jejbefglgn gfgnqg lekhjphl*lekhjphl
}eperva kg} ka}vral+ kg} lajag+ kg} jelgnal fgn }everu}nqg.
Bakg fagfglgn penclkg}aialg}agn qgnc kebad verperanma kgca+ jglg lefug lkg}aialg}a ver}ebuv
fagvg} fabgur fgn glgn verbenvul lekhjphl*lekhjphl qgnc bgnqgl }elgka.
Fagnvgrg lefug mgrg lkg}aialg}a ver}ebuv fagvg} lekadgvgnnqg lkg}aialg}a mgrg lerog kebad
bgnqgl facunglgn lgreng avu penclkg}aialg}agn qgnc favergnclgn fgkgj bgb ana oucg
berfg}grlgn mgrg lerog.
Berfg}rlgn lkg}aialg}a ana pencekg}gn fgpgv fabgca fgkgj vacg lekg} uvgjg qgavu ?
pencekg}gn mgar+ pencekg}gn velgn fgn pejgvragn.
Pencekg}gn mgar gfgkgd mgrg pencekg}gn fajgng }gjbuncgn fapgng}lgn }gjpga jenmgar
fencgn }ujber pgng} fgra bu}ur ka}vral gvgu }ujber gpa cg} qgnc verbglgr.
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce =
Pencekg}gn velgn gfgkgd pmgrg pencekg}gn fajgng }gjbuncgn fapgng}lgn fgn lejufagn
favelgn danccg jenogfa }gvu.
Pejgvragn gfgkgd mgrg pencekg}gn fajgn }gjbuncgn faalgv fgn fa}gvulgn fenncgn
jenccunglgn pgfugn khcgj qgnc jejpunqga vaval mgar renfgd. Fgkgj dgk ana khcgj anful
vafgl vuruv jenmgar.
Pejhvhncgn qgnc fabgdg} fgkgj bulu ana gfgkgd mgrg jejhvhnc khcgj qgnc fafg}grlgn
gvg} jenmgarlgn khcgj qgnc faphvhnc. Mgrg qgnc bgnqgl facunglgn fgkgj pencekg}gn
gfgkgd pejhvhncgn fencgn cg} hl}acen fgn pejhvhncgn fencgn bu}ur ka}vral.
Pencekg}gn qgnc pgkanc bgnqgl nfacunglgn pgfg sglvu ana gfgkgd pencekg}gn mgar fencgn
bu}ur cg}. Lgreng avu lefug mgrg ver}ebuv qgavu kg} bu}ur ka}vral fgn kg} cg} glgn fabgdg}
}emgrg verpa}gd. ]efgnclgn mgrg*mgrg penncekg}gn qgnc kgan glgn falekhjphllgn fgkgj
}gvu phlhl bgdg}gn. Pejhvhncgn+ lgreng jerupglgn jg}gkgd ver}enfara jglg
pejbgdg}gnnqg oucg fakglulgn }emgrg verpa}gd.
Fabgsgd ana lkg}aialg}a fgra mgrg pencekg}gn ?
g! Pencekg}gn mgar
7. Kg} cg}
2. Kg} ka}vral vergl
=. Kg} ka}vral cg}
6. Kg} ka}vral verja}
5. Kg} ka}vral ekelvrhn
9. Kg} bu}ur pkg}jg
b! Pencekg}gn velgn
7. Kg} re}a}ven}a ka}vral
2. Kg} vaval
=. Kg} pengjpgnc
6. Kg} bu}ur velgn
5. Kg} velgn
9. Kg} vujpuk velgn
3. Kg} velgn cg}
4. Kg} vejpg
1. Kg} ce}el
70. Kg} kefglgn
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 6
77. Kg} anful}a
72. Kg} ukvrg}hnam
m! Kg} bu}ur
Ekelvrhfg verujpgn
f! Kg} bu}ur cg}
7. Kg} j79
2. Kg} bu}ur MH2
e! Kg} bu}ur cg} fgn ikul}
7. Kg} bu}ur MH2 fencgn ekelvrhfg bera}a ikul}
2. Kg} bu}ur ikul}
=. Kg} ekelvrhfg bera}a ikul}
6. Kg} bu}ur ikul}
5. Kg} ekelvrhfg vervuvup
9. Kg} bu}ur fencgn ekelvrhfg bera}a ikul}
3. Kg} bu}ur verenfgj
4. Kg} bu}ur vgnpg pekanfunc
1. Kg} Ekelvrhfg vgnpg verujpgn
70. Kg} VAC gvgu kg} shkirgj cg}
M. Gkgv * gkgv Bgnvu Kg}
7. Lgbek Kg}
Lgbek kg} bag}gnqg fabugv fgra vejbgcg qgnc fapakan fgn fabunclu} fgncgn lgrev a}hkg}a
Qgnc fa}ebuv lgbek kg} gfg vacg jgmgj qgavu ?
lgbek ekelvrhfg
lgbek jg}}g
lgbek vengcg
Lgbek ekelvrhfg gfgkgd lgbek qgnc jencdubunclgn pe}gsgv kg} fencgn ekelvrhfg. Lgbek
jg}}g jencdubunclgn pe}gsgv kg} fencgn benfg lerog. Lgbek vengcg gfgkgd lgbek qgnc
jencdubunclgn }ujber vengcg gvgu ograncgn ka}vral fencgn pe}gsgv kg}. Lgbek ana
bag}gnqg verfgpgv pgfg pe}gsgv kg} GM gvgu GM * FM.
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 5
2. Pejecgnc Ekelvrhfg
Uounc qgnc vafgl ber}ekgpuv fgra ekelvrhfg faoepav fencgn pejecgnc ekelvrhfg. Pejecgnc
ekelvrhfg verfara fgra jukuv penoepav fgn pecgncgn qgnc fabunclu} hked bgdgn penqelgv.
Pgfg sglvu berdenva gvgu }eke}ga jencekg}+ bgcagn pecgncgn qgnc vafgl berdubuncgn
fencgn lgbek facgnvunclgn pgfg cgnvuncgn fgra bgdgn iaber gvgu lgqu.
=. Pgku Kg}
Pgku Ag} facunglgn unvul jekepg}lgn fgn jencekugrlgn vergl kg} pgfg ogkur Ag} fencgn
ogkgn jejuluklgn gvgu jencchre}lgn pgfg fgergd kg}.
Berdgva*dgvakgd jejber}adlgn vergl Ag} fencgn pgku Ag} lgreng lejunclangn glgn
jejermal le jgvg gvgu le bgcagn bgfgn kgannqg.
6. ]algv Lgsgv
Fapercunglgn unvul ?
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 9
Jejber}adlgn benfg lerog qgnc glgn fakg}
Jejber}adlgn vergl Ag} qgnc }ufgd kepg} fgra ogkur kg} hked pulukgn pgku kg}.
5. Lkej Jg}}g Lkej jg}}g efgkgd }ugvu gkgv unvul jencdubunclgn lgbek jg}}g le benfg lerog.
Bag}gnqg lkej jg}}g fabugv fgra bgdgn fencgn pencdgnvgr ka}vral qgnc bgal }eperva
Vejbgcg gcgr gru} ka}vral fgpgv jencgkar fencgn bgal+ lkej jg}}g ana fakenclgpa fencgn
pecg} qgnc lugv. Qgnc fgpgv jenoepav benfg lerog fencgn bgal .
Sgkgupun fejalagn perjulggn benfg lerog qgnc glgn faoepav fencgn lkej jg}}g dgru}
faber}adlgn verkebad fgduku fgra lhvhrgn*lhvhrgn }eperva lgrgv+ mgv+ janqgl.
9. Vgnc $Penoepav! Penoepav $vgnc! facunglgn unvul jejecgnc gvgu jejanfgdlgn benfg lerog qgnc jg}ad
pgng}.
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 3
F. PERKENCLGPGN LE]EKGJGVGN LEROG.
PERKENCLGPGN LE]EKGJGVGN KG]
7. Dekj Kg}
Dekj Ag} jgupun vgbar kg} facunglgn unvul jekanfunca lukav julg fgn jgvg fgra }angr kg}
$}angr ukvrg yahkev fgn ukvrg jergd! qgnc fgpgv jeru}gl lukav jgupun jgvg+Dekj kg} ana
fakenclgpa fencgn lgmg ldu}u} qgnc fgpgv jencurgnca }angr ukvrg yahkev fgn ukvrg jergd
ver}ebuv.
]angr Ag} qgnc }gncgv vergnc(lugv avu vafgl bhked fakadgv fgncgn jgvg kgnc}unc }gjpga
ogrgl 79 jever. Hked lgreng avu pgfg }ggv jencekg} dgru} jencunglgn dekj(lefhl kg}
qgnc fgpgv jengdgn }an}gr kg} fencgn lgmg kg}. Ulurgn lgmg Ag} qgnc fapglga vercgnvunc
pgfg pekgl}gnggn pencekg}gn. Ujujnqg penccunggn lgmg kg} gfgkgd }ebgcga beraluv? Nh.
9. fapglga unvul Ag} vaval Nh. 9 fgn 3 unvul pencekg}gn }gjpga =0 gjper. Nh. 9 unvul
pencekg}gn fgra =0 }gjpga 35 gjper. Nh. 70 unvul pencekg}gn fgra 35 }gjpga 200 gjper.
Nh. 72. unvul pencekg}gn fgra 200 }gjpga 600 gjper. Nh. 76 unvul pgncekg}gn fagvg} 600
gjper. Unvul jekanfunca lgmg penqgranc ana bag}gnqg pgfg bgcagn kugr jgupun fgkgj
fakgpa}a fencgn lgmg puvad.
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 4
2. ]grunc Vgncgn
]grunc vgncgn fabugv fgra lukav gvgu g}be} kungl unvul jejufgdlgn jejecgnc pejecgnc
ekelvrhfg. Pgfg sglvu jencekg} dgru} }ekgku fapglga }epg}gnc }grunc vgncgn.
=. Gprhn
Gprhn gfgkgn gkgv pekanfunc bgfgn fgra permalgn buncg gpa qgnc fabugv fgra lukav gvgu fgra
g}be}.
Gfg bebergpg oena}(bgcagn gprhn ?
7! gprhn kencgn
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 1
2! gprhn fgfg
=! gprhn kenclgp ?
6!
6. ]epgvu Kg}
]epgvu kg} bercung unvul jekanfunca lgla fgra }ejburgn buncg gpa+ Bakg vafgl gfg }epgvu
kg}+ }epgvu bag}g qgnc vervuvup }ekurudnqg fgpgv oucg fapglga.
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 70
5. Jg}ler Kg}
Oalg vafgl jejunclanlgn gfgnqg lgjgr kg} fgn yenvakg}a qgnc bgal+ jglg cunglgnkgd
jg}ler kg}+ gcgr verdanfgr fgra g}gp fgn febu kg} qgnc bergmun.
9. Lgjgr Kg}
Lgjgr Ag} fabugv fgra bgdgn vgdgn.gpa. Lgjgr kg} penvanc gcgr hrgnc qgnc gfg fa}elavgrnqg
vafgl vercgnccu hked mgdgqg kg}.
Unvul jencekugrlgn cg}+ }ebgalnqg lgjgr kg} fakenclgpa fgncgn }a}vaj yenvakg}a? Fafgkgj
lgjgr kg} favejpgvlgn jeog Ag}. Jeog kg} dgru} ber}ad fgra bgdgn*bgdgn qgnc jufgd
verbglgr gcgr verdanfgr fgra lejunclangn verogfanqg lebglgrgn hked permalgn vergl kg} fgn
buncg gpa.
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r a g n a } j g a k @ r h m l e v j g a k . m h j Pgce 77
3. Oglev kg}
Oglev pekanfunc bgfgn,vgncgn qgnc vebugv fgra lukav(g}be}