| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
You're replacing the hubcaps on a car. Which of the following are you most likely to use?
rubber mallet |
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claw hammer |
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wooden mallet |
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ball-peen hammer |
A mallet is a hammer with a relatively large head, often made of rubber or wood. Both the size and material of the mallet head help prevent damage when striking more delicate surfaces.
Which of the following statements about welding is not true?
electric-arc welding is safer than oxyacetylene welding |
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a weld can often be stronger than the base materials alone |
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welding is done at higher temperatures than soldering |
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no filler metal is required when welding |
Welding is a high-temperature process that involves melting the base metals in the objects to be joined to fuse them together. A filler metal is used to provide additional material to make up a joint that, depending on the weld type, can be stronger than the base materials alone. Oxyacetylene welding is a welding process that uses a torch fueled with oxygen and acetylene gases. Electric-arc welding utlizes electric current in a safer welding process (it doesn't involve burning explosive gases) that enables a wide variety of specialized applications like stick, MIG (metal inert gas), and TIG (tungsten inert gas) welding.
Which of the following is not an advantage of using a ratchet with a larger point-sized socket?
all of these are advantages of larger point sizes |
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larger point sizes are stronger |
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larger point sizes allow easier alignment |
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larger point sizes allow greater toque to be applied |
A ratchet (or socket wrench) is a wrench that applies torque in only one direction with a handle that can be moved back and forth without losing contact with the fastener. A ratchet uses variable attachments called sockets which come in a variety of drive sizes based on the size of the opening that attaches to the ratchet. Sockets with the same drive size will vary in the shape (six-point, twelve-point) and size of the nut opening that attaches to the fastener being tightened or loosened. Smaller point sized sockets are stronger and can apply greater torque while larger point sizes allow easier alignment.
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.
This tool is a(n) __________.
screwdriver |
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chisel |
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awl |
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punch |
A punch is narrow and is used to drive objects like nails (pin punch) or for making guide marks for drilling (center punch) or patterns in wood or metal.