| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.61 |
| Score | 0% | 72% |
A joint created by welding is __________ the original metal.
harmful to |
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as strong or slightly weaker than |
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as strong or stronger than |
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weaker than |
The joint created by welding is as strong or stronger than the original metal.
Which type of screwdriver has a x-shaped indentation on the head?
slotted |
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hex |
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phillips |
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nut driver |
Screwdrivers come in many different handle, shaft, and tip configurations for use in a wide variety of applications. Screwdrivers are classified by their tip which is shaped to fit a corresponding screw head. Common tips are slotted (flat) and Phillips (x-shaped).
Which of the following statements about solding is not true?
flux is used to clean surfaces before soldering |
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solder is an alloy of lead and tin |
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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.
These tools are called:
rasps |
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planes |
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chisels |
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files |
Wood chisels are used to shape or smooth wood surfaces. They come in a variety of widths and can be used with hand power or tapped with a mallet when deeper cuts need to be made.
Which of the following is the primary difference between pliers and pincers?
pincers are designed for large objects, pliers are designed for small objects |
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pincers squeeze, pliers cut or pull |
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pliers are designed for large objects, pincers are designed for small objects |
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pliers squeeze, pincers cut or pull |
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.