| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
| Score | 0% | 65% |
What is a micrometer used for?
measuring the diameter of cylindrical objects with high precision |
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measuring length around corners |
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transferring dimensions between objects |
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ensuring that a surface is level |
Micrometers provide accuracy to the thousandths of an inch and come in outside and inside varieties. An outside micrometer is used to measure outside thickness, such as the diameter of a bolt, while an inside micrometer is used to measure the inside dimension of an object, such as the diameter of the hole of a nut or the width of a channel.
Which of the following is the primary difference between pliers and pincers?
pliers are designed for large objects, pincers are designed for small objects |
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pincers squeeze, pliers cut or pull |
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pliers squeeze, pincers cut or pull |
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pincers are designed for large objects, pliers are designed for small objects |
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.
Measuring tools provide a convenient and easy way to compare object dimensions against:
a drawing |
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perfection |
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a standard |
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each other |
Measuring tools give easy access to the wide variety of standard dimensions that are used to categorize and classify objects.
Screwdrivers are most broadly classified by their:
torque |
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width |
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length |
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tip |
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).
You are using a hacksaw to cut a Class 8 bolt. What is the most appropriate TPI for your saw blade?
10 TPI |
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18 TPI |
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2 TPI |
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8 TPI |
A Class 8 bolt is made of very hard metal and larger TPI saw blades are most appropriate for very hard metals.