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Sheet Metal Period 1 Randomized > sheet metal 1 > Flashcards

sheet metal 1 Flashcards

sheet metal 1 (93 cards)

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1
Q

How do you choose an appropriate hand groover to offset the grooved seam?

A

Use a hand groover with an opening one quarter of an inch larger than the required groove seam.

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2
Q

At what Arc Flash incident energy level must greater emphasis than normal be placed on de-energizing electrical equipment for safety purpose?

A

Exceeding 120 cal/cm2

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3
Q

What spacing is recommended for EAT low velocity tool fasteners in concrete?

A

Space fasteners at least 50 mm apart.

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4
Q

What is another name for a cold chisel?

A

Cape chisel.

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5
Q

What is another name for hardware cloth metal wire woven together and then dipped in a bath of molten zinc to help protect against corrosion?

A

Expanded metal.

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6
Q

When hoisting the following load, what is the tension on the slings marked ‘a’?

A

250 kg

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7
Q

What is another name for end cutting pliers?

A

Nippers.

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8
Q

What is the maximum capacity in kg of an extra heavy duty ladder?

A

136

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9
Q

What does the Canadian Occupational Health and Safety mention about who has responsibility for safety around electrical shock and burns?

A

It outlines the employer must take responsibilities.

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10
Q

What machine is used to square up, trim or cut sheet metal to various sizes?

A

The squaring shear.

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11
Q

What is the name of the reinforced edge that has heavy metal added to them?

A

Drip edge.

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12
Q

How are labels handled under WHMIS?

A

By the globally harmonized system of classification and labelling of chemicals.

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13
Q

According to the Occupational Health and Safety Act of Alberta the painting of a wooden ladder should:

A

never happen.

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14
Q

What does the number 18/8 stainless steel mean?

A

18% chromium and 8% nickel.

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15
Q

What should the support area be in inches on each side for a ladder placed on a flat surface?

A

24

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16
Q

What hammer has a square, flat face on one end and a peen end that is tapered on one side only?

A

Ball peen hammer.

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17
Q

What does the WHMIS pictogram represent?

A

A health hazard.

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18
Q

What is the crystallization patterning typically called on hot dipped galvanized iron?

A

Spangle.

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19
Q

Why is aluminium hard to solder?

A

Aluminum oxides are hard to remove therefore becomes difficult to solder.

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20
Q

What is black iron that measures more than 1/8” called?

A

Mild steel.

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21
Q

What is an employee’s responsibility?

A

They have the responsibility to wear all required PPE and ensure it is in good condition.

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22
Q

Which tool is used for truing operation which returns a wheel to its original round shape?

A

A mechanical dresser.

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23
Q

When setting up planks for a platform of a scaffold, the planks must extend no more than _____ inches past the support members.

A

12

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24
Q

How many parts does the OHS ‘Core Requirements Applicable to all Industries’ section have?

A

It has 12 parts.

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25
What is the draw limit per hour for an acetylene cylinder?
1/7 of its volumetric capacity.
26
Which of the following is true when using a vertical hitch?
It supports the total weight of the load with a single sling at 90 degrees to the horizontal.
27
What material of gloves should be used for welding?
Leather.
28
Which of the following Explosive Actuated Tool charge colours has the strongest charge?
Red.
29
What is the size of the vertical tube on a scaffold?
75 mm.
30
What is the correct length of the rivet to use with sheet metal?
The total thickness of the metal plus one time the diameter of the rivet.
31
What is the distance between the fasteners of a lap seam called?
Fastener pitch.
32
What type of hem can be made in a barfolder?
Double hem.
33
What is the common name for flange connections seams use to make filed connections?
Flanges.
34
What rotary machine is commonly used to form edges to accept wire for a wired edge?
Flanging machine.
35
When solving an equation within a set of brackets, exponents are dealt with:
first.
36
What percent of sales tax are you paying when purchasing an $8700 generator if you pay $609 in sales tax?
7.
37
The total cost of a job is $4550 and $550 is profit. The percentage that is profit is _____ percent.
12.
38
What is the square root of 169 equal to?
13.
39
What is the mixed number 4 2/3 expressed as a decimal rounded off to three decimal places?
4.667.
40
How many liters is 46.2 gallons?
175.1 L.
41
What is the perimeter of a circle that has a radius of 350 mm?
2199 mm.
42
If = 2.6 meters and = 1.2 meters, what is the area of the parallelogram?
The area is 3.12 square meters.
43
Which of the following is a description of a pentagon?
A 5 sided figure with all angles at 90 degrees and all sides bisecting.
44
A cylinder one foot in diameter and seven feet long will have a volume of how many cubic feet?
38.4.
45
What does the symbol represent on a HVAC print?
Ceiling Air Supply.
46
What component separates the air that circulates through the house from the products of combustion?
Heat exchanger.
47
Where does an uncased air conditioning coil unit mount?
On top of the furnace.
48
What distribution system has pipes running around the entire outside edge of the room?
Perimeter loop system.
49
Which fan is often used to meet the ventilation air requirement?
Main bathroom fan interlocked with the furnace distribution fan.
50
What can happen if screws penetrate the inner liner of aluminum B-vents?
The screws will be exposed to acids in the flue gases.
51
What material is represented by the following architectural symbol?
Brick.
52
What is the term that describes air that comes in through cracks in a building enveloped?
Infiltration.
53
How many British thermal units is one watt?
3.413 Btuh.
54
What does the electrical symbol shown below refer to?
A fan motor.
55
What is ventilation?
The process of supplying fresh air to a space
56
What is exfiltration?
The process of air escaping from a space
57
What is infiltration?
The process of unintentional air entering a space
58
What is an A-vent?
A type of ventilation system
59
How many British thermal units is one watt?
3.413 Btuh
60
What device is used to shut off the flow of air in solid fuel fired furnaces if the temperature gets too high?
A high limit control
61
What is the clearance required from combustible material when using a single wall vent connector on gas appliances?
Three inches
62
If a furnace is 85% efficient, what does that mean?
15% of the heat is lost out the chimney
63
At what stage of the project is the furnace hung in the basement?
Rough-in stage
64
What is one of the purposes of the bead at the small end of a pipe?
It provides a stop for the connecting pipe
65
Referring to the figure, which weld symbol indicates a square?
#2
66
What metal is suitable to cut with an oxyacetylene torch?
Carbon steel
67
What statement is correct about weld speed travel with GMAW?
Travel speed affects the penetration and weld profile
68
Which statement is correct about flux cored arc welding?
It is a common choice for field fabrications because windy conditions can be tolerated better
69
Where does the S cleat go when assembling ducts?
On the folded side
70
Which corner of the cleat is correctly nipped in the picture?
Corner 1
71
What is the first recommended procedure to safely light a heavy duty torch?
Set the oxygen and acetylene pressures at the regulators for the tip size and thickness of the metal to be cut
72
What is one of the problems when using the formula to determine the height of the blank material when fabricating a round elbow?
Accuracy of the measurements
73
Referring to the figure, which weld symbol indicates a stud?
#3
74
What is the modified tapered butt joint called in brazing?
Scarf joint
75
Why use four supports instead of the required minimum of three supports for the roof jack?
Even support
76
What is an arc welding process which uses an arc established between a continuously fed cored wired electrode and the work piece?
Flux cored arc welding
77
How is atmospheric contamination prevented with GMAW welding?
By using an externally applied shielding gas
78
What is the red A arrow pointing to in the flashing fabrication of a roof jack?
Lap Allowance Line
79
What are the two basic designs of a fire damper?
* Horizontal blade dampers * Vertical blade dampers
80
What type of welding joint is Figure C?
flush corner
81
What could happen if the burring machine rolls are set to 1 metal thickness in forming the offset lap seam?
Metal may be cut by the rolls and the formed edge will deform
82
When comparing forehand inclination to backhand inclination, what will the backhand inclination produce?
Flatter bead with less penetration
83
What distance does the black circle represent in the picture?
Diameter
84
What type of fire damper is used if the blades are out of the airstream?
Type A
85
What is a marking gauge used for in sheet metal work?
Scribing line parallel to the edge of a sheet of metal
86
How many inches is added to a stretchout of the pattern if the lap seam is 1"?
1 inch
87
What is the step after dividing the plan view into twelve equal parts when developing an elbow pattern?
Draw the stretchout
88
How far from the stretchout should the support be if using four supports for the roof jack?
1/3 of the stretchout distance apart from one another
89
What is another name for the carbonizing flame which is rich in acetylene on an oxyacetylene welding torch?
Reducing flame
90
What is the first step when assembling a Pittsburgh lock?
Hammering the male into the female pocket
91
What type of weld fault can run in line with the weld, across the weld, and within the weld crater?
Cracking
92
What is the standard cheek bender designed for allowances?
1/2 inch
93
What is the small end allowance if the galvanized metal thickness is .0239 inch?
0.0239 inch

Sheet Metal Period 1 Randomized (2 decks)

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