Your Results | Global Average | |
---|---|---|
Questions | 5 | 5 |
Correct | 0 | 3.30 |
Score | 0% | 66% |
Which of the following is the primary difference between pliers and pincers?
pliers squeeze, pincers cut or pull |
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pincers squeeze, pliers cut or pull |
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pliers are designed for large objects, pincers are designed for small objects |
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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.
Which of the following is not an aspect of the mechanical advantage of pliers?
change the direction of hand grip force |
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provide precision for manipulating small objects |
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focus hand grip force |
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amplify hand grip force |
Pliers are designed to provide a mechanical advantage, allowing the force of the hand's grip to be amplified and focused with precision. Pliers also allow finer control over objects that are too small to be manipulated by the fingers alone. The standard configuration is combination pliers which provide a fixed maximum jaw width. Other styles include adjustable joint pliers that allow selecting jaw width, needle nose pliers for holding small objects in tight spaces and locking pliers that will lock in place to hold or clamp objects together.
This tool is a(n) __________.
box-end wrench |
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combination wrench |
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adjustable wrench |
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open-end wrench |
Wrenches are used to provide grip and mechanical advantage by applying torque to turn objects (or to keep them from turning). The longer the wrench, the more torque that can be applied. Wrench ends are available in two primary types, open-end and box-end. A box-end wrench encloses the bolt head and is useful when more torque is needed or to maintain contact in difficult to reach locations. An open-end wrench is designed for speedily loosening easier to reach fasteners. Wrenches that feature one open and one box end are called combination wrenches and adjustable wrenches feature an open end with an adjustable width.
A __________ is driven by a motor and used to shape and form edge contours.
router |
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chisel |
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plane |
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file |
A router is a tool that a worker uses to rout (hollow out), shape, or contour an area in relatively hard material like wood or plastic.
Which of the following is used in metal work for shaping metal?
mallet |
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claw hammer |
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rivet hammer |
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ball peen hammer |
Ball peen hammers are most commonly used in automotive repair. They have rounded heads and are used to drive punches and chisels.