Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Shop Theory [Finalized!] > [D2L] Final Review > Flashcards

[D2L] Final Review Flashcards

1
Q

What filler material would you use to connect Copper to Steel

A

Silver Alloy Wire (Silver brazing)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is 95/5 when it comes to soldering/brazing?

A

solder made of tin and antimony

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

who is responsible for creating the refrigeration and air conditioning mechanic apprenticeship course outline?

The technical training provider
Alberta industry training
the provincial apprenticeship committee
the local apprenticeship committee

A

the provincial apprenticeship committee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

who administers the b52 mechanical refrigeration code?

A

absa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is a blueprint set

plans for all aspects of a buildings construction
a compilation of all isometric drawings in all buildings in a complex
architectural and mechanical construction drawings
all of the above

A

plans for all aspects of a buildings construction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

the key elements of WHMIS are?

worker education, safety data sheets, and container labelling
risk of fire or toxic effects and education
transportation of dangerous goods, fire hazzard, and truck placards
workers, employers and the public

A

worker education, safety data sheets, and container labelling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

which is the most versatile fire extinguisher?

A

multi-purpose dry chemical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how would you determine the distance the footing of your extension ladder should be from the wall you are climbing?

A

ladder height divided by 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

certain scaffolds do not require handrails

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

a class C involves?

A

electrical equipment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

a 20’ scissor lift can be operated by workers with no specialized training?

T or F

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what should be done if the rating tag has been ripped from a lifting sling?

A

sling should be destroyed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what type of fastener is most commonly used in commercial HVAC equipment?

1/4” hex head self tapping tech screw
m10 Phillips self tapping screw
m8 torx screw
5/16” hex head self tapping tech screw

A

5/16” hex head self tapping tech screw

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

in metallurgy(금속공학), the term annealed means

A

a substance exposed to extreme heat and allowed to cool slowly in a controlled environment producing a soft workable product

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

how would a technician determine the grade of bolt that needs to be replaced?

A

the number of markings on the head of the bolt + 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

An installer should always utilize the strongest fasteners available in any application?

T or F

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

if a threaded fastener with thread lock or locktite is difficult to remove it should be

A

heated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

brazing filler metal finds its way into the joint through

A

capilliary action

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what kind of flare is used in refrigeration systems?

45* sae
38* auto
29* standard
40* metric

A

45* sae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

the 2 grades of ACR copper are

A

L and K

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

to swage is to…

A

expand an opening in tubing for an equal size tubing to fit inside

22
Q

in the interest of safety, what is the last step before a torch should be lit

A

soap test joints for leaking fuel

23
Q

acetylene must always be transported and stored

A

upright

24
Q

a regulator used for acetylene in our trade will reduce pressure from?

A

250-15psig

25
Q

an acetylene valve is to be opened with a?

A

a valve wrench

26
Q

at what temperature does copper melt?

A

1984*F

27
Q

ACR copper is always sized by outside diameter because?

A

of varying wall thicknesses of grades and necessity of low clearance connections

28
Q

the word spool is used to describe an arrangement of pipe and fittings for a given application

T or F

A

True

29
Q

soldering to join copper uses filler metals that melt over 1100*F

T or F

A

False

Soldering to join copper typically uses filler metals that melt at temperatures below 840°F

30
Q

brazing uses filler metals that melt below 500*F

T or F

A

False

Brazing uses filler metals that melt above 840°F

31
Q

silver brazing (borax) flux is used with 85/15 brazing filler when

A

when joining copper to brass

32
Q

a fall protection harness should be inspected..

A) before every use
B) twice annually
C) whenever deemed necessary by an employers safety program
D) monthly

A

A) before every use
C) whenever deemed necessary by an employers safety program

33
Q

Bill c-45 (2003)places liability relating to your safety with who?

A

your direct supervisor as an appointed representative of your employer

34
Q

why is the liability implication from c-45 so important to an apprenticeship training program?

A

because a journeyperson would be considered the direct supervisor of an apprentice

35
Q

what kind of hazard controls can be implemented to mitigate hazards in the workplace?

A) anecdotal controls
B) administrative controls
C) engineering controls
D) personal protective equipment

A

B) administrative controls
C) engineering controls
D) personal protective equipment

36
Q

who is most responsible for your safety in the workplace?

A

you. the worker.

37
Q

the WCB is

A

a non-profit organization that compensates workers for expenses relating to lost time/income and associated medical expenses

38
Q

what are 3 steps a technician can easily take to help ensure the safety of any and all personnel at a jobsite?

1) ensure adequate lighting in the area the work is being completed
2) good housekeeping practices
3) keep access restricted to authorized personnel equipped with appropriate ppe
4) all of the above

A

all of the above

39
Q

your employer has the right to exceed safety expectations outlined in oh&s code

T or F

A

True

40
Q

my employer has a legal obligation to provide me with the PPE required to perform my job safely

T or F

A

False

41
Q

the employer must provide PPE when?

A) the PPE will require replacement annually
B) the PPE protects from dangerous noise levels
C) the PPE protects from respiratory damage
D) flame retardant clothing is required

A

B) the PPE protects from dangerous noise levels
C) the PPE protects from respiratory damage

42
Q

your service/valve wrench is used for

service valves
fan bushing set screws
adjusting thermostatic expansion valves
all of the above

A

service valves

43
Q

a green handled Robertson screw driver is

A

1 for 5, 6, and 7 screws

44
Q

interlocking joint pliers are also know as

A

pump pliers

45
Q

to cut copper tubing we should use a hacksaw

A) with 17-24 teeth per inch
B) with 9-16 teeth per inch
C) with 24-32 t.p.i.
D) no, we should not.
E) both c and d

A

both C & D

C) with 24-32 t.p.i.
D) no, we should not.

46
Q

when are micrometers and calipers used?

A

when measurements must be accurate to within .001”

47
Q

what limits the accuracy of an i.r. thermometer?

A

reflection of light on the surface being measured

48
Q

what is the actuator used in most all gauges?

A

bourdon tube

49
Q

According to the modules, with refrigeration the term tube and pipe are sized by:

A

Tube Inside diameter, Pipe Outside diameter

50
Q

Which bearing do not get greased?

Ball Bearings
Pillow Block Bearings
Roller Bearings
Sleeve Bearings

A

Sleeve Bearings

Shop Theory [Finalized!] (23 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions