Exam (elaborations)
Elevator Mechanic Exam Review Questions and Answers.
- Course
- Elevator Mechanic
- Institution
- Liberty University
Elevator Mechanic Exam Review Questions and Answers.
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Elevator Mechanic Exam Review Questionsand Answers
A .contractor .wants .to .raise .the .car .speed .from .100fpm .to .125fpm, .it .currently .has .a .12" .sheave. .W
hat .sheave .is .required? .- .(correct .answer) .-Diam=12" .12/4=3" .25fpm=3" .100fpm .
+ .25fpm= .12"+3"= .15" .sheave
A .MOV .
(Metal .Oxide .Varistor) .burns .out. .You .replace .it, .but .cannot .read .voltage .or .resistance. .What .should
.you .do? .- .(correct .answer) .-Replace .it .with .a .larger .MOV
On .a .Ward-
Leonard .circuit .the .break .is .set, .but .the .motor .is .trying .to .slip .through .the .break. .What .is .the .issue
? .- .(correct .answer) .-Suicide .Circuit
You .have .an .old .DC .motor .and .are .adding .an .SCR .drive, .what .do .you .do .to .the .interpoles? .- .
(correct .answer) .-
Leave .the .interpoles .alone. .When .adding .a .SCR .drive .to .the .generator, .the .series .loop .is .removed, .
as .are .the .3 .resistors. .Everything .else .remains .the .same
A .hydro .runs .up .with .no .load, .but .will .not .run .with .a .full .load. .What .is .the .issue? .- .
(correct .answer) .-The .relief .valve .is .set .too .low
Runby .for .a .1:1 .hits .the .CWT .buffer .4" .below .the .top .landing. .CWT .runby .should .be .set .at .18". .Ho
w .much .should .the .ropes .be .shortened? .- .(correct .answer) .-22"
You .need .to .work .on .a .freight .door .retiring .cam, .you .LOTO .the .main .line .but .there .is .still .power .on
.the .cam. .What .circuit .is .still .hot? .- .(correct .answer) .-
Door .Operator .Disconnect/ .Main .Line .Disconnect
The .contractor .requests .that .the .vertical .center .of .a .Rack .and .Pinion .hoist .be .moved. .How .do .you .
do .this? .- .(correct .answer) .-Adjust .Tie .Downs .and .Wall .Ties
,Working .pressure .on .a .Hydro .is .400psi. .What .is .the .maximum .relief .valve .setting? .- .
(correct .answer) .-400psi .x .150%= .600psi
What .must .be .installed .on .a .false .car .before .operation? .- .(correct .answer) .-Spring .Loaded .Safeties.
There .is .slight .arcing .between .the .brush .and .commutator. .What .action .must .be .taken? .- .
(correct .answer) .-None. .
Heavy .arcing=Light .brush .pressure. .Heavy .bush .pressure=mechanical .wear
If .rigging .gear .is .roped .3:1 .and .a .BEAM .CLAMP .is .used .to .lift .a .6,000lb .load. .What .is .the .beam .cap
acity? .- .(correct .answer) .-
18,000lbs. .Beam .capacity .is .cut .in .half .with .use .of .clamp, .when .rigging .all .blocks, .rope, .and .clamps .
will .be .Equal .to .the .lowest .load .rating
How .much .resistance .is .measured .over .a .normally .closed .switch? .- .(correct .answer) .-
1.2ohms. .should .be .zero, .but .will .never .be .that .low
A .car .traveling .in .the .hoistway .always .stops .at .the .same .spot .and .blows .a .fuse. .What .causes .this? .-
.(correct .answer) .-Traveling .cable .has .a .cut/exposed .wire .or .a .short
How .is .a .class .1 .yearly .buffer .test .preformed? .- .(correct .answer) .-
Car .at .bottom .landing .and .on .inspection, .jump .out .direction .and .final .limits. .With .pit .clear, .run .dow
n .to .compress .buffers, .buffers .should .fully .extend .within .90 .seconds. .
5yr: .Full .load .Full .speed .
CWT: .Full .speed .Empty
How .many .strain .supports .are .required .on .a .350ft .raceway? .- .(correct .answer) .-4. .1 .every .100ft
How .is .stainless .steel .drilled .out? .- .(correct .answer) .-Slow .speed .and .constant .pressure
What .is .the .required .amount .of .retainer .clips .for .wedge .shackles .and .what .is .the .spacing? .- .
(correct .answer) .-Minimum .2 .clips. .1st .at .a .maximum .4x .the .diameter .of .the .rope .
2nd .at .a .maximum .8x .the .diameter .above .the .1st .clip
A .300ohm .resistor .burns .out, .but .you .don't .have .another .one. .How .can .you .make .one? .- .
(correct .answer) .-
2 .600ohm .resistors .in .parallel .is .300ohms. .Resistance .is .half .of .highest .resistor .in .parallel .circuit. .
3 .225ohm .resistors .in .parallel .is .75ohms.
When .cutting .laminated .panels, .which .direction .should .the .finish .side .face? .- .(correct .answer) .-
Finish .side .facing .the .cutting .edge .of .the .tool. .Blade .will .burr .the .backside
How .do .you .cut .a .finished .floor? .- .(correct .answer) .-Cutting .blade .away .from .finished .side
, A .480vac .stepdown .240vac .transformer .is .connected .to .a .3 .phase .rectifier, .what .is .the .output .volta
ge? .- .(correct .answer) .-320vac .
3 .phase .full .wave .= .1.33x .output .voltage
A .car .is .loaded .with .125% .and .sinks, .why? .- .(correct .answer) .-Slipping .through .the .break
If .you .find .a .broken .or .missing .barricade .what .should .you .do? .- .(correct .answer) .-Write .up .a .formal
.inspection .request
What .are .the .consequences .of .misaligned .joints .on .a .Rack .and .Pinion? .- .(correct .answer) .-
Broken .Gear .teeth. .CWT .derailment. .Excessive .wear/ .crease .the .surface .of .the .tube
A .dumbwaiter .is .9sqft .in .area, .4ft .high, .and .capacity .is .13.9lb/ft3. .What .is .total .capacity? .- .
(correct .answer) .-9 .x .4 .x .13.9= .500lbs .Max .capacity
You .must .enter .a .pit .with .a .toxic .atmosphere, .how .do .you .proceed? .- .(correct .answer) .-
Following .proper .OSHA .procedure .with .proper .training .and .PPE
When .changing .a .1:1 .car .rated .at .600fpm .and .2,000lb .capacity .to .a .2:1, .what .are .the .new .ratings? .
- .(correct .answer) .-300fpm .4,000lbs .capacity .
Half .the .speed, .Double .the .capacity
A .vertical .platform .lift .has .a .clearance .of .1 .inch. .How .much .will .it .have .to .move .to .meet .code? .- .
(correct .answer) .-Move .in .¼ .inch. .Code .is .¾ .inch
A .car .weighs .2500lbs .with .a .capacity .of .2500lbs, .the .CWT .is .weighted .at .40%, .how .much .is .the .mot
or .lifting .when .the .car .is .fully .loaded? .- .(correct .answer) .-2500(car) .+ .1000(40%) .3500. .5000-
3500=1500lbs .lifted .by .the .machine
How .must .Oxygen .and .Acetylene .tanks .be .stored? .- .(correct .answer) .-Vertically, .12 .feet .apart, .or .on
.a .cart .with .a .½ .hour .fire .barrier .between .them
What .is .code .for .sill .to .sill .distance? .- .(correct .answer) .-Minimum .½ .inch .Maximum .1 .½ .inches
When .drilling .a .jack .hole .in .sandy .conditions .what .type .of .drill .rig .is .required? .- .(correct .answer) .-
Rotary .or .Auger .bit. .Rotary=Soft .Percussion=Rocky .Combo=Solid
A .customer .does .not .want .an .escape .hatch .on .a .residential .elevator, .under .what .condition .is .this .le
gal? .- .(correct .answer) .-Manual .operation .must .be .provided
Your .helper .wired .the .down .direction .and .final .limit .switches, .now .the .car .will .only .travel .up, .what .
is .the .issue? .- .(correct .answer) .-The .down .direction .limit .was .wired .incorrectly.
What .are .the .effects .of .one .rope .sitting .deeper .in .the .sheave .groove? .- .(correct .answer) .-
The .rope .wears .out .and .breaks .faster
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