| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Measuring tools provide a convenient and easy way to compare object dimensions against:
a standard |
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each other |
|
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 not a type of electric-arc welding?
oxyacetylene |
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TIG |
|
stick |
|
MIG |
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 nuts prevent loosening via nylon in their threads?
lock |
|
cotter |
|
slotted |
|
wing |
Wrenches are used with threaded fasteners like bolts and nuts. A bolt has external threads while a nut has internal threads and this thread pattern combination allows them to lock together and act as fasteners. Nuts come in a variety of configurations including wing nuts which provide appendages that allow tightening and loosening by hand, slotted nuts that use a cotter pin to lock the nut in place and prevent it from loosening, and lock nuts that also prevent loosening via nylon in their threads. Threads are identified by pitch which is the number of threads per inch.
When cutting hard metals with a hacksaw you should choose a blade with __________ teeth per inch (TPI).
even |
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high |
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odd |
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low |
Blades with more and smaller teeth (high TPI) cut harder metals more effectively while blades with fewer and larger teeth (low TPI) cut softer metals more effectively.
Which of the following would be used to make a drilling guide mark in a sheet of metal?
screwdriver |
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chisel |
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pin punch |
|
center 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.