| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
A welding rod provides:
the joining material for a weld |
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fuel for the welding torch |
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protection for the welder |
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stability for the welding torch |
The joining material for a weld is called a welding or filler rod and is available in a variety of diameters and alloys for different welding tasks.
When using a hacksaw, blades with __________ teeth are more appropriate for cutting thinner materials.
more |
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wider |
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less |
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thinner |
A hacksaw has replaceable blades and is used to cut metal. The blade type is chosen based on the material that is to be cut. Blades with larger numbers of teeth per inch are more appropriate for cutting thinner materials.
What is a caliper used for?
ensuring that surfaces are level |
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transferring distances between objects |
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making perfectly vertical lines |
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measuring thickness and irregular shapes |
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 would provide the most accurate measure of the diameter of a solid cylinder?
tape measure |
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outside micrometer |
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inside micrometer |
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ruler |
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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tolerances |
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angles |
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diameters |
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.