Exam (elaborations)
Mike-s Ultimate Mechanics Review Questions and Answers.
- Course
- Elevator Mechanic
- Institution
- Liberty University
Mike-s Ultimate Mechanics Review Questions and Answers.
[Show more]
Content preview
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Wisdoms. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76799 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
