| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.98 |
| Score | 0% | 60% |
Which of the following statements about solding is not true?
solder has a comparatively low melting point |
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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 |
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.
Which of the following is used in metal work for shaping metal?
claw hammer |
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mallet |
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ball peen 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.
Measuring tools provide a convenient and easy way to compare object dimensions against:
a standard |
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perfection |
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each other |
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a drawing |
Measuring tools give easy access to the wide variety of standard dimensions that are used to categorize and classify objects.
A welding rod provides:
protection for the welder |
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stability for the welding torch |
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fuel for the welding torch |
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the joining material for a weld |
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.
Which of the following types of saws would you use if you needed to cut the wood quickly and weren't concerned with leaving rough edges?
rip saw |
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hacksaw |
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crosscut saw |
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coping saw |
Wood saws are categorized primarily by their teeth. Crosscut saws utilize knife-shaped teeth that cut across the grain of the wood while rip saws cut with the grain using chisel-shaped teeth that rip the wood cells apart as the cut is made. The kerf (slot) made by by a crosscut saw is much smoother than that made by a rip saw but a rip saw cuts much faster. Coping saws are a type of bow saw used to make detailed often curving cuts using replaceable blades with fine small teeth.