SMART apprentice final exam 1
Polarity
When the power source is being used for welding, never move the ____ switch
1/8 inches
what's the approx thickness a 10 gauge
1/16 inches
what's the approx thickness a 16 gauge
1/32 inches
what's the approx thickness a 22 gauge
Wooden Mallet
Can be used to pound metal on a brake
Arc length
What's the distance from the electrode tip to the surface of the base metal?
Right
When holding right-hand snips, the upper blade will be on the?
Inspect it
When using a power tool, the first thing to do is?
Chromium
Which of these elements inhibit rust? Manganese, nickel, carbon, chromium
Zinc
Which of these elements is added to hot-rolled steel to make galvanized steel? Chromium, nickel, aluminum, zinc
None of the above
Which of these metals cannot be welded?? Copper, aluminum, galvanized, none of these
Copper
Which of these metals is a good conductor of electricity ? Copper, stainless steel, aluminum, terne plate
Plasma Cutter
A type of machine that lays out and cuts patterns using a computer-software program.
8
How many gages less is the rated capacity of a brake if the angle and insert bars are removed ?
4
How many gages less is the rated capacity of a brake with the angle bar removed?
Aluminum
What metal is difficult (nearly impossible) to solder?
80,000 psi
An E8018 electrode has what minimum tensile strength?
Positive
DCEP means the electrode is ___?
Stick
SMAW is also called ____ welding
3/16
The easy edger is a special rotary machine that turns only a _____ inch wide flange
Combination
The type of snip blade that's ideal for making curved cuts
Punch Press
Used for stamping out parts
Removable fingers
A box pan has these, making it different from a standard brake
18
A brake rated as 1810 means that it can bend a piece of mild steel, the full length of the brake, up to what gage material?
Alloy
A combination of metals fused together
Riveting
A hammer with a round face and beveled edges to avoid denting a meta surface is a _______ hammer
Iron worker
A machine that can cut, bend, punch, and notch various shapes of metal
Coil Line System
A machine that cuts, notches, and forms duct.
Yes
A welding power source is rated at 300 amps, 32 volts, and has 89% duty cycle. Could the rated current be maintained for 7 minutes?
Cleat Bender
A specialized type of bar folder used to form drivers.
1/4 inch
At this thickness, black iron is considered plate and not sheet
Standard gauge
Black iron, stainless steel, and galvanized iron are gauged by a system called the U.S ___________ gauge.
Straight and combination
Blades for snips can be classified as what two blades?
50%
Brakes have about _____ percent less capacity for stainless steel compared to mild steel
1 inch
Capacity of brakes is based on bending at least how wide of a flange on a mild steel?
Knives
Cutting blades on a shear
Story pole
East method to maintain duct elevations
Hold down
Holds the metal in place on a jumper shear
Clockwise
Left handed snipe cut in this direction
Fish hooks
Pushing snips completely to the end of the last cut before making the next one avoids what?
File
Removes burrs from metal
Spanner
Rolls on a rotary machine are removed with this wrench
Spiral Pipe
Round ductwork made on a special machine using a narrow coil is called a _____ pipe?
constant current
SMAW uses what type of welding machine?
Chop Saw
Shop equipment you use to cut a number of pieces of turning vanes
Hacksaw
Teeth should always face away from the handle
Rake angle
The angle of the upper cutting blade of a shear
Electrolysis
The chemical reaction that occurs when copper comes in contact with a metal that contain iron
1.5
The clearance between the nose bar and the bending lead must be at least how many times the thickness of the material?
Copper
The oxide of this metal is patina
Pin Spotter
The special spot welder used to attach pins that hold insulation
Away from
The teeth of the hacksaw blade point ______ the handle?
Mill
The type of finish of aluminum and stainless steel most commonly used in a sheet metal shop
Punch (male)
The upper die of a press brake
304
This is the most common grade of stainless steel used in the SMART industry 302, 308, 316, 304
Copper
This metal is gauged by ounces per square foot
Stainless steel
This metal won't stain other metals Brass, stainless steel, copper, aluminum
Standard, Phillips, Torx
Three screwdriver types
A rectifier
Transformer type power sources change AC to DC through ______?
Duct pullers
Used on a rectangular duct
Crimper
Used on a round duct
Scriber
Used to mark metal but should never be pounded
Center punch
Used to mark points on heavy gage metal
Marking gage
Used to mark standard allowances
Scratch awl
Used to prick punch light gage material
Water level
Used to transfer elevations
18
Using an 1810 shear, what is the maximum thickness mild steel material you can cut regardless of its length?
18
What is the thinnest gage sheet metal you could expect to weld with SMAW?
90 degrees
What angle should the cutting blades of the snips be to the metal?
Generators and transformers
What are the two basic types of SMAW power sources
Position rod can be used
What do you know about an electrode by looking at the third digit?
Voltage
What does arc length control?
Nickel
What element is added to stainless steel to improve its strength?
Ounces per square foot
What is Brass gauged by?
Shallow
With DCEN, what type of penetration can be expected?
Smaller
Would a smaller or larger conductor have more resistance to current flow?
7 inches (2 times the center to center distance)
You are forming a Pittsburgh seam using a roll-forming machine with 5 pairs of rolls with a center-to-center distance of 3.5 inches. What's the shortest piece you can safely run through this machine ?
4 inches
You can acceptably operate on a press brake without a guard if you keep you fingers how many inches away from the dies?
Back gage
You shop stocks 60 inch x 120 inch sheets. Your cut list says you need 100 pieces of 60 inch x 15 inch. What gage should you use?
Wire or band iron
You should never bend this on a bar folder
All of the above
Your weld bead isn't the proper size. What corrects this? Travel speed, lead angle, travel angle, arc length, all of the above
Aluminum
this metal could be used in an explosive atmosphere because it is non-sparking
