| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.85 |
| Score | 0% | 57% |
Measuring tools provide a convenient and easy way to compare object dimensions against:
a standard |
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each other |
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a drawing |
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perfection |
Measuring tools give easy access to the wide variety of standard dimensions that are used to categorize and classify objects.
Which of the following is the primary difference between pliers and pincers?
pliers are designed for large objects, pincers are designed for small objects |
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pliers squeeze, pincers cut or pull |
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pincers squeeze, pliers cut or pull |
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pincers are designed for large objects, pliers are designed for small objects |
Pincers provide a mechanical advantage that's used to cut, pinch or pull an object. The force applied to pincers is concentrated to a point or to an edge of the tool which allows pincers to be brought very close to a surface. Pincers are typically used for removing objects from a material to which they've previously been applied, for example, to pull nails from wood.
You're constructing a cabinet in your workshop and one of the cabinet doors is slightly too big. Which of the following tools would you use to make it fit?
plane |
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chisel |
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drill |
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file |
In wooodworking, a plane is used to shave off a small amount of material to smooth a surface or make it fit properly. A jack plane is a general purpose plane that contains an adjustable depth blade set at an angle with a handle and knob to allow gripping when sliding the plane across wood.
What is a caliper used for?
ensuring that surfaces are level |
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transferring distances between objects |
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measuring thickness and irregular shapes |
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making perfectly vertical lines |
Calipers are similar to micrometers in shape but instead of measuring distances, calipers are used to transfer distances between objects. An outside caliper is used to transfer outside dimensions while an inside caliper is used to transfer inside distances. A vernier caliper is an extremely precise caliper (down to \({1 \over 1000}\) inch) that allows measuring / transferring either inside or outside dimensions.
Which of the following statements about solding is not true?
solder is an alloy of lead and tin |
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flux is used to clean surfaces before soldering |
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soldering can only join metals |
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solder has a comparatively low melting point |
Soldering is a process by which two or more items (typically metal) are joined together by melting a filler metal (solder) into the joint. An electrically powered soldering iron or soldering gun is used to melt the solder which is an alloy of lead and tin that has a melting point below the melting point of the items being joined. A chemical cleaning agent called flux is also used to clean the surfaces before soldering.