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Elevator Mechanic Exam Prep with correct answers
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Elevator Mechanic Exam Prep with correct answers
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Elevator Mechanic Exam Prep with correctanswers
Know nnthe nnformula nnfor nnRPM nn- nncorrect nnanswer-RPM nn= nn60 nn∙ nnƒ nn÷ nnP÷2 nn=
Step nn1. nn60 nnx nnFrequency nn(Hz.) nn= nn
Step nn2. nnPoles nn÷ nn2 nn=
Take nnanswer nn1 nnand nn÷ nnby nnanswer nn2 nn=
You nnare nnusing nna nnTemp nnRun nnBox nnand nnyou nnget nnshocked! nnWhy!
520 nnPg. nn4 nn- nncorrect nnanswer-Bad nnGround
Scaffolding, nnYou nnhave nn32' nnof nnrise, nnyou nnare nnusing nn3x5 nnscaffolding. nnWhere nnwill nnthe nntie nnoff nnpoints
nnbe nn?
140 nnPG. nn287-288 nn- nncorrect nnanswer-Scaffolding nnshould nnbe nntied nnto nnthe nnstructure nnusing
#9 nnwire nnor nntie-in nndevices. nnThe nnfirst nnvertical nntie
should nnbe nnat nnthe nnmaximum nnheight nnof nn4 nntimes nnthe
narrowest nnbase nndimension. nnAdditional nnties nnare nnnot
to nnexceed nn26' nnvertically. nnMaximum nnhorizontal
distance nnbetween nnties nnis nnnot nnto nnexceed nn30'.
How nnmuch nnshould nnCounterweight nnway?
240 nnPg. nn14 nn- nncorrect nnanswer-Counterweights nn(Typically) nnare nnhung nnto nncounter nnbalance nnthe
nnweight nnof nnthe nncar nnPLUS nn40% nnof nnCapacity nnLoad.
Pulling nnSpare nnWires nn(Example) nn10% nnof nn52 nnWires
,515 nnPg.26 nn- nncorrect nnanswer-Note: nnWe nndo nnnot nnuse nnwire nnsmaller nnthan nn#20 nnin nntravelling nncables
nnand nn#24 nnoutside nntravelers.
Largest nnwires nnare nnfeeders nnto nnHoist nn/Pump nnmotor
We nnalways nnhave nn10 nn% nnspares
10% nnof nn52 nn= nn5.2
On nna nncalculator nnMultiply nnthe nnpercent nn10 nnby nnthe nnnumber nnyou nnhave nnand nn÷ nnby nn100
10 nnX nn52 nn÷ nn100 nn= nn5.2
The nnfreight nndoor nnmotor nnis nnspinning nnbut nnthe nndoor nnwont nnmove, nnWhy?
535 nnPg. nn9 nn- nncorrect nnanswer-The nncorrect nnlube nnmust nnbe nnused nnon nnchains.
Read nnLula nnand nnDumb nnwaiters
545 nnPg nn1 nn- nncorrect nnanswer-Lula: nnLimited nnuse/Limited nnAccess nn(Example nnWheelchair nnLifts)
Max nnRise nn25'
Max nnSpeed nn30 nnFt/Min
Max nnCapacity nn1400 nnLbs.
Max nnPlatform nnArea nn18 nnSq/Ft.
Residential nnElevator:
Max nnRise nn50 nn'
Max nnSpeed nn40 nnFt/min
Max nnCapacity nn940 nnLbs.
Max nnPlatform nnArea nn19 nnSq/Ft nn
840 nnPg nn2
Dumbwaiters:
Platform nnlimited nnto nn9 nnSq/Ft
Inside nnheight nnis nnlimited nnto nnno nnmore nnthan nn4 nnFeet
, Capacity nnis nnlimited nnto nn500Lbs
No nnRiders
If nnyou nnget nnon nntop nnof nnDumbwaiter nnwhat nnmust nnbe nndone?
545 nnPg nn14 nn- nncorrect nnanswer-You nnnever nnget nnon nntop nnand nnyou nnwork nnonly nnpartially nnin nnwith nnthe
nnmain nnline nnOFF
PI nnFormula nnand nnGallons nn(Example) nnHow nnmuch nnoil nnto nnmove nna nn6" nnjack nn25'
815 nnPg nn10 nn- nncorrect nnanswer-Notes:(Pi) nnπ nnis nn3.1416 nnand nn231 nnCubic nninches nnto nnthe nnGallon
Area:
Remember nnto nn÷ nn6" nn÷ nn2 nn= nn3 nnto nnget nnRadius
Area nn= nnπ∙ nnr²
Area nn= nn3.1416 nnx nn3 nnx nn3 nn= nn28.27 nninches nnor nn3.146 nnx nn9 nn= nn28.27
Volume
Multiple nnare nntimes nnheight nnto nnsolve nnfor nnVolume
V nn= nnA∙H
V nn= nn28.27 nnx nn300 nn(25" nnfeet nnx nn12" nn= nn300)
V nn= nn8481 nnCubic nnInches
Since nnwe nnalready nnknow nnthere nnare nn231 nncubic nninches nnto nnthe nngallon nn
8481 nn÷ nn231 nn= nn36.71 nnGallons
Relief nnvalve nnworking nnpressure nn- nncorrect nnanswer-Relief nnValve nnis nnset nnat nn150% nnworking nnpressure
SCR nnExample:
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