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FCTC TEST PREP EXAM QUESTIONS AND ANSWERS UPDATED (2025/2026) (VERIFIED ANSWERS), Exams of Safety and Fire Engineering

California State University (CSU) - ChicoSafety and Fire Engineering

What is a lever? - ANS ✓a machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum How do levers work? - ANS ✓amplifies an input force to provide a greater output force, which is said to provide leverage what is the mechanical advantage of a lever? - ANS ✓the ratio or the output force to the input force How are levers classified? - ANS ✓by relative positions of the fulcrum and the input and output forces

Typology: Exams

2024/2025

Available from 07/11/2025

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FCTC
FCTC TEST
FCTC TEST PREP EXAM QUESTIONS AND
ANSWERS UPDATED (2025/2026)
(VERIFIED ANSWERS)
What is a lever? - ANS ✓a machine consisting of a beam or rigid rod pivoted at a
fixed hinge or fulcrum
How do levers work? - ANS ✓amplifies an input force to provide a greater
output force, which is said to provide leverage
what is the mechanical advantage of a lever? - ANS ✓the ratio or the output
force to the input force
How are levers classified? - ANS ✓by relative positions of the fulcrum and the
input and output forces.
allows identification by the relative locations of the fulcrum, the resistance,
and the effort.
Class 1 Lever - ANS ✓Fulcrum in the middle
the effort is applied on one side of the fulcrum and the resistance on the
other side.
Examples of Class 1 levers: - ANS ✓see saw, crowbar, scissors
pf3
pf4

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Download FCTC TEST PREP EXAM QUESTIONS AND ANSWERS UPDATED (2025/2026) (VERIFIED ANSWERS) and more Exams Safety and Fire Engineering in PDF only on Docsity!

FCTC

FCTC TEST PREP EXAM QUESTIONS AND

ANSWERS UPDATED (202 5 /202 6 )

(VERIFIED ANSWERS)

What is a lever? - ANS ✓a machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum How do levers work? - ANS ✓amplifies an input force to provide a greater output force, which is said to provide leverage what is the mechanical advantage of a lever? - ANS ✓the ratio or the output force to the input force How are levers classified? - ANS ✓by relative positions of the fulcrum and the input and output forces. allows identification by the relative locations of the fulcrum, the resistance, and the effort. Class 1 Lever - ANS ✓Fulcrum in the middle the effort is applied on one side of the fulcrum and the resistance on the other side. Examples of Class 1 levers: - ANS ✓see saw, crowbar, scissors

FCTC

What is the mechanical advantage of a Class 1 lever? - ANS ✓It may be greater than or less than 1 Class 2 Lever - ANS ✓Resistance in the middle. Effort is applied on one side of the resistance and the fulcrum is located on the other side. Examples of Class 2 levers: - ANS ✓Wheel barrow, a nutcracker, a bottle opener or the brake pedal of a car What is the mechanical advantage of a Class 2 lever? - ANS ✓It is always greater than 1 Class 3 Lever - ANS ✓Effort in the middle The resistance is on one side of the effort and the fulcrum is located on the other side. Examples of Class 3 levers - ANS ✓tweezers or the human mandible Mechanical advantage is always less than 1 FRE 123 - ANS ✓Fulcrum in middle for 1st class Resistance is in the middle for the 2nd lever Effort is in the middle for the 3rd HEAD - ANS ✓pressure created by the force of gravity and is a function of the difference in elevation between intake and output

FCTC

Why are pulleys used? - ANS ✓lift loads apply forces trasmit power What is usually the drive element of a pulley? - ANS ✓rope, cable, belt or chain that runs over the pulley inside the groove Pulleys are assembled to form what - ANS ✓a block and tackle in order to provide mechanical advantage to apply large forces rope and pulley systems (block and tackle) are characterized by what? - ANS ✓the use of a single continuous rope to transmit a tension force around one or more pulleys to lift or move a load the rope may be a light line or a strong cable What is the mechanical advantage of a rope and pulley system if it does not dissipate or store energy? - ANS ✓the number of parts of the rope that act on the load