| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
You're creating a tube out of a sheet of metal. What type of fastener are you likely to use?
nail |
|
glue |
|
punch |
|
rivet |
A nail is a short pin-shaped shaft of steel that's typically used to fasten pieces of wood together. It has a flat head on one end and a point on the other. A rivet consists of a cylindrical shaft with a head on one end and a tail on the other. When the rivet is installed, the tail is expanded and reshaped to form another head, creating a dumbell shape that will hold two surfaces together semi-permanently.
The primary difference between a standard level and a bullseye level is which of the following?
a standard level has only one bubble to center |
|
a bullseye level can measure across two dimensions |
|
a bullseye level has only one bubble to center |
|
a standard level can measure across two dimensions |
Levels utlize a fluid-filled tube containing a bubble that is centered when the surface is horizontal (level) or vertical (plumb) along the direction of the tube. While a standard level can measure along a single dimension, a bullseye level is circular and can indicate the levelness of a two dimensional plane.
When compared to drilling, boring makes __________ holes.
larger |
|
rougher |
|
smaller |
|
smoother |
Drilling is the process of making small holes in wood or metal while boring is the process of making larger holes.
Which of the following statements about welding is not true?
a weld can often be stronger than the base materials alone |
|
electric-arc welding is safer than oxyacetylene welding |
|
welding is done at higher temperatures than soldering |
|
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.
An arc-welder creates heat using:
high voltage electricity |
|
propane |
|
natural gas |
|
oxyacetylene |
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.