MACHINES EXAM QUESTIONS
AND ANSWERS 100% PASS
What is any device called that helps you to do work? - ✔✔Machine
The six simple machines include the following: lever, block, wheel and axle, inclined
plane, screw, and what else? - ✔✔Gear
What is the simplest of all machines? - ✔✔Lever
What class of lever provides what is called a fractional mechanical advantage? -
✔✔Third
What is the formula for mechanical advantage? - ✔✔Mechanical advantage =
Resistance/Effort
Hatches are locked shut by lugs called what? - ✔✔Dogs
What type of levers have the effort and the resistance on the same side of the fulcrum
but the effort is farther from the fulcrum that is the resistance? - ✔✔Second class
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, What type of levers have the effort and the resistance on opposite sides of the fulcrum,
and the effort and resistance move in opposite directions? - ✔✔First class
A single movable block gives a mechanical advantage of what? - ✔✔2
What is a grooved wheel that turns by the action of a rope in the groove? - ✔✔Pulley
Moments of force are measured in what? - ✔✔Foot-pounds
What is the product of the amount of the force times the distance the force acts from the
center of rotation? - ✔✔Moment of force
What can be used to magnify your effort or to speed it up? - ✔✔Wheel and axle
What do you have when you apply two equal forces at equal distances on opposite
sides of a fulcrum and move those forces in opposite directions so they both tend to
cause rotation about the fulcrum? - ✔✔Couple
What permits you to overcome a large resistance, by applying a small force through a
longer distance when raising the load? - ✔✔Inclined plane
What is found by dividing the total distance of the effort you exert by the vertical
distance the load is raised or lowered? - ✔✔Mechanical advantage
What is two inclined planes set base to base called? - ✔✔Wedge
In the Navy, what is a common use of the inclined plane? - ✔✔Gangplank
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