FCTC TEST PREP questions and answers

FCTC TEST PREP questions and
answers
A belt and pulley system is characterized by - answerstwo or more pulleys in common
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to a belt.
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What does a belt and pulley system allow for? - answersmechanical power, torque,
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and speed to be transmitted across axles
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How is mechanical advantage realized? - answersif the pulleys are different diameters
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what is a pulley? - answersa wheel on an axle or shaft that is designed to support
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movement and change of direction of a cable or belt along its circumference
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Why are pulleys used? - answerslift loads
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apply forces hh hh



trasmit power hh




What is usually the drive element of a pulley? - answersrope, cable, belt or chain that
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runs over the pulley inside the groove
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Pulleys are assembled to form what - answersa block and tackle in order to provide
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mechanical advantage to apply large forces
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rope and pulley systems (block and tackle) are characterized by what? - answersthe
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use of a single continuous rope to transmit a tension force around one or more
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pulleys to lift or move a load
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the rope may be a light line or a strong cable
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What is the mechanical advantage of a rope and pulley system if it does not dissipate
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or store energy? - answersthe number of parts of the rope that act on the load
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What is a lever? - answersa machine consisting of a beam or rigid rod pivoted at a
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fixed hinge or fulcrum
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How do levers work? - answersamplifies an input force to provide a greater output
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force, which is said to provide leverage
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what is the mechanical advantage of a lever? - answersthe ratio or the output force to
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the input force
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