Exam (elaborations)
Mike-s Ultimate Mechanics Review Questions and Answers.
- Course
- Elevator Mechanic
- Institution
- Liberty University
Mike-s Ultimate Mechanics Review Questions and Answers.
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Mike's Ultimate Mechanics ReviewQuestions and Answers
1. .A .contractor .wants .to .raise .the .car .speed .from .100fpm .to .125fpm, .it .currently .has .a .12" .sheave.
.What .sheave .is .required? .- .(correct .answer) .-100fpm ./ .125fpm .= .12" ./ .X= .15"
2. .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 .630
3. .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 .425
4. .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.
5. .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 .815
6. .Runby .for .a .1:1 .hits .the .CWT .buffer .4" .below .the .top .landing. .CWT .runby .should .be .set .at .18". .
How .much .should .the .ropes .be .shortened? .- .(correct .answer) .-22" .235
7. .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 .535
8. .The .contractor .requests .that .the .vertical .center .of .a .Rack .and .Pinion .hoist .be .moved. .How .do .yo
u .do .this? .- .(correct .answer) .-Adjust .Tie .Downs .and .Wall .Ties .850
9. .Working .pressure .on .a .Hydro .is .400psi. .What .is .the .maximum .relief .valve .setting? .- .
(correct .answer) .-400psi .x .150%= .600psi .815
,10. .What .must .be .installed .on .a .false .car .before .operation? .- .(correct .answer) .-
Spring .Loaded .Safeties .110
11. .There .is .slight .arcing .between .the .brush .and .commutator. .What .action .must .be .taken? .- .
(correct .answer) .-None
Note: .Heavy .arcing=Light .brush .pressure, .Heavy .bush .pressure=mechanical .wear .430
12. .If .rigging .gear .is .roped .3:1 .and .a .BEAM .CLAMP .is .used .to .lift .a .6,000lb .load. .What .is .the .beam .
capacity .requirement? .- .(correct .answer) .-18,000lbs.
Note: .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 .210
13. .How .much .resistance .is .measured .over .a .normally .closed .switch? .- .(correct .answer) .-
1.2ohms. .should .be .zero, .but .will .never .be .that .low
14. .A .car .traveling .in .the .hoistway .always .stops .at .the .same .spot .and .blows .a .fuse. .What .causes .thi
s .- .(correct .answer) .-Traveling .cable .has .a .cut/exposed .wire .or .a .short .515
15. .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 .down .to .compress .buffers, .buffers .should .fully .extend .within .90 .seconds.
Note: .5yr: .Full .load .Full .speed .CWT: .Full .speed .Empty .555 .(may .be .60 .on .test)
16. .How .many .strain .supports .are .required .on .a .350ft .raceway? .- .(correct .answer) .-
4. .1 .every .100ft .505-510
17) .How .is .stainless .steel .drilled .out? .- .(correct .answer) .-Slow .speed .and .constant .pressure .205
18. .What .is .the .required .amount .of .retainer .clips .for .wedge .shackles .and .what .is .the .spacing? .- .
(correct .answer) .-
At .least .2. .First .clip .being .maximum .4 .times .the .diameter .of .the .rope .from .the .top .of .the .shackle, .
and .the .second .clip .is .maximum .8 .times .the .diameter .of .the .rope .above .the .first .clip. .245
19. .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. .345
20. .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 .255
21. .How .do .you .cut .a .finished .floor? .- .(correct .answer) .-Cutting .blade .away .from .finished .side .255
, 22. .A .480vac .stepdown .240vac .transformer .is .connected .to .a .3 .phase .rectifier, .what .is .the .output .v
oltage? .- .(correct .answer) .-320vac .3 .phase .full .wave .= .1.33x .output .voltage. .715
23) .Car .is .loaded .with .125% .and .sinks. .Why? .- .(correct .answer) .-Slipping .through .the .break
24. .If .you .find .a .broken .or .missing .barricade .what .should .you .do? .- .(correct .answer) .-
Write .up .a .formal .inspection .request
25. .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 .850
26. .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
27. .You .must .enter .a .pit .with .a .toxic .atmosphere, .how .do .you .proceed? .- .(correct .answer) .-
Following .proper .OSHA .procedure .with .proper .training .and .PPE .133
28. .When .changing .a .1:1 .car .rated .at .600fpm .and .2,000lb .capacity .to .a .2:1, .what .are .the .new .ratin
gs? .- .(correct .answer) .-300fpm .4,000lbs .capacity .Half .the .speed, .Double .the .capacity
29. .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
30. .A .car .weighs .2500lbs .with .a .capacity .of .2500lbs, .the .CWT .is .weighted .at .40%, .how .much .is .the .
motor .lifting .when .the .car .is .fully .loaded? .- .(correct .answer) .-2500(car) .+ .1000(40%) .3500. .5000-
3500=1500lbs .lifted .by .the .machine .240
31. .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 .205
32. .What .is .code .for .sill .to .sill .distance? .- .(correct .answer) .-
Minimum .½ .inch .Maximum .1 .½ .inches .525
33.When .drilling .a .jack .hole .in .sandy .conditions .what .type .of .drill .rig .is .required? .- .
(correct .answer) .-Rotary .or .Auger .bit.
Note: .Rotary=Soft .Percussion=Rocky .Combo=Solid .810
34. .A .customer .does .not .want .an .escape .hatch .on .a .residential .elevator, .under .what .condition .is .th
is .legal? .- .(correct .answer) .-Manual .operation .must .be .provided .840
35. .Your .helper .wired .the .down .direction .and .final .limit .switches, .now .the .car .will .only .travel .up, .w
hat .is .the .issue? .- .(correct .answer) .-The .down .direction .limit .was .wired .incorrectly.
36. .What .are .the .effects .of .one .rope .sitting .deeper .in .the .sheave .groove? .- .(correct .answer) .-
The .rope .wears .out .and .breaks .faster .245
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