Springs used in machines are usually made of ____________.
Answer(s): D
Machine springs are usually made of steel although sometimes they’re made of brass or other metal alloys.
A clutch is a type of ______________.
Answer(s): B
Clutches connect and disconnect parts, so they’re a type of coupling.
When Cam A completes one revolution, the lever will touch the contact point ________ .
When the high point of the cam connects with the lever arm, the lever arm will touch the contact point.Two high points on the cam mean the lever arm will touch the contact point twice with each revolution of the cam.
A single block-and-fall is called a _______.
Answer(s): C
A single block-and-fall is called a runner.
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