| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
You're creating a tube out of a sheet of metal. What type of fastener are you likely to use?
nail |
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rivet |
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glue |
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punch |
A nail is a short pin-shaped shaft of steel that's typically used to fasten pieces of wood together. It has a flat head on one end and a point on the other. A rivet consists of a cylindrical shaft with a head on one end and a tail on the other. When the rivet is installed, the tail is expanded and reshaped to form another head, creating a dumbell shape that will hold two surfaces together semi-permanently.
When cutting hard metals with a hacksaw you should choose a blade with __________ teeth per inch (TPI).
high |
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low |
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even |
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odd |
Blades with more and smaller teeth (high TPI) cut harder metals more effectively while blades with fewer and larger teeth (low TPI) cut softer metals more effectively.
A joint created by soldering is:
weaker than a weld |
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stronger than a weld |
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as strong as a weld |
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as strong as the original metal |
A joint created by soldering is not as strong as a weld and not as strong as the original metal.
Which of the following statements about an 8-point saw is not true?
an 8-point saw makes a rougher cut than a 6-point saw |
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an 8-point saw makes a finer cut than a 12-point saw |
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an 8-point saw has eight teeth per inch |
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an 8-point saw makes a rougher cut than a 12-point saw |
Saw blades are described by the number of teeth per inch (TPI). The higher the TPI of a saw the finer the cut it will make.
Which of the following is not a type of electric-arc welding?
oxyacetylene |
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stick |
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TIG |
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MIG |
Welding is a high-temperature process that involves melting the base metals in the objects to be joined to fuse them together. A filler metal is used to provide additional material to make up a joint that, depending on the weld type, can be stronger than the base materials alone. Oxyacetylene welding is a welding process that uses a torch fueled with oxygen and acetylene gases. Electric-arc welding utlizes electric current in a safer welding process (it doesn't involve burning explosive gases) that enables a wide variety of specialized applications like stick, MIG (metal inert gas), and TIG (tungsten inert gas) welding.