| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
A joint created by soldering is:
weaker than a weld |
|
as strong as the original metal |
|
stronger than a weld |
|
as strong as a weld |
A joint created by soldering is not as strong as a weld and not as strong as the original metal.
An arc-welder creates heat using:
high voltage electricity |
|
natural gas |
|
oxyacetylene |
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propane |
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.
The primary difference between a claw and a ball-peen hammer is which of the following?
their striking end |
|
their size |
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their handle shape |
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their non-striking end |
The most common striking tool is the hammer and the most common variety of hammer is the claw hammer. The claw hammer has two ends, one to drive nails and one to remove nails. Ball-peen hammers replace the claw with a rounded end that's used to round off the edges of metal pins and make gaskets.
Which of the following would provide the most accurate measure of the diameter of a solid cylinder?
outside micrometer |
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ruler |
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tape measure |
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inside micrometer |
Micrometers provide accuracy to the thousandths of an inch and come in outside and inside varieties. An outside micrometer is used to measure outside thickness, such as the diameter of a bolt, while an inside micrometer is used to measure the inside dimension of an object, such as the diameter of the hole of a nut or the width of a channel.
Which of the following is used in metal work for shaping metal?
mallet |
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ball peen hammer |
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claw hammer |
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rivet hammer |
Ball peen hammers are most commonly used in automotive repair. They have rounded heads and are used to drive punches and chisels.