| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.94 |
| Score | 0% | 59% |
You're creating a tube out of a sheet of metal. What type of fastener are you likely to use?
rivet |
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punch |
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nail |
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glue |
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.
You need to loosen a bolt in a hard to reach location. Which of the following wrenches would best suit this task?
adjustable |
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box-end |
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spanner |
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open-end |
Wrenches are used to provide grip and mechanical advantage by applying torque to turn objects (or to keep them from turning). The longer the wrench, the more torque that can be applied. Wrench ends are available in two primary types, open-end and box-end. A box-end wrench encloses the bolt head and is useful when more torque is needed or to maintain contact in difficult to reach locations. An open-end wrench is designed for speedily loosening easier to reach fasteners. Wrenches that feature one open and one box end are called combination wrenches and adjustable wrenches feature an open end with an adjustable width.
Measuring tools provide a convenient and easy way to compare object dimensions against:
a drawing |
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each other |
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perfection |
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a standard |
Measuring tools give easy access to the wide variety of standard dimensions that are used to categorize and classify objects.
This tool is a(n) __________.
outside micrometer |
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inside micrometer |
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outside caliper |
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inside caliper |
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.
Inside and outside micrometers measure inside and outside:
lengths |
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angles |
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diameters |
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tolerances |
Micrometers measure the diameter of cylindrical objects. Outside micrometers measure the external diameter of cylinders and inside micrometers measure the internal diameter of the cylinder's hole.