FCTC WRITTEN EXAM 100+ | LATEST ALREADY GRADED A+ |
100+ QUESTIONS WITH CORRECT ANSWERS
A belt and pulley system is characterized by
Correct Answer: Two or more pulleys in common to a belt.
What does a belt and pulley system allow for?
Correct Answer: Mechanical power, torque, and speed to be transmitted across axles
How is mechanical advantage realized?
Correct Answer: If the pulleys are different diameters
What is a pulley?
Correct Answer: A wheel on an axle or shaft that is designed to support movement and change
of direction of a cable or belt along its circumference
Why are pulleys used?
Correct Answer: Lift loads, Apply forces, Transmit power
What is usually the drive element of a pulley?
,Correct Answer: Rope, cable, belt or chain that runs over the pulley inside the groove
Pulleys are assembled to form what
Correct Answer: 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?
Correct Answer: 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?
Correct Answer: The number of parts of the rope that act on the load
What is a lever?
Correct Answer: A machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum
How do levers work?
Correct Answer: Amplifies an input force to provide a greater output force, which is said to
provide leverage
What is the mechanical advantage of a lever?
, Correct Answer: The ratio or the output force to the input force
How are levers classified?
Correct Answer: 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
Correct Answer: 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:
Correct Answer: See saw, crowbar, scissors
What is the mechanical advantage of a Class 1 lever?
Correct Answer: It may be greater than or less than 1
Class 2 Lever
Correct Answer: 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:
100+ QUESTIONS WITH CORRECT ANSWERS
A belt and pulley system is characterized by
Correct Answer: Two or more pulleys in common to a belt.
What does a belt and pulley system allow for?
Correct Answer: Mechanical power, torque, and speed to be transmitted across axles
How is mechanical advantage realized?
Correct Answer: If the pulleys are different diameters
What is a pulley?
Correct Answer: A wheel on an axle or shaft that is designed to support movement and change
of direction of a cable or belt along its circumference
Why are pulleys used?
Correct Answer: Lift loads, Apply forces, Transmit power
What is usually the drive element of a pulley?
,Correct Answer: Rope, cable, belt or chain that runs over the pulley inside the groove
Pulleys are assembled to form what
Correct Answer: 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?
Correct Answer: 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?
Correct Answer: The number of parts of the rope that act on the load
What is a lever?
Correct Answer: A machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum
How do levers work?
Correct Answer: Amplifies an input force to provide a greater output force, which is said to
provide leverage
What is the mechanical advantage of a lever?
, Correct Answer: The ratio or the output force to the input force
How are levers classified?
Correct Answer: 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
Correct Answer: 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:
Correct Answer: See saw, crowbar, scissors
What is the mechanical advantage of a Class 1 lever?
Correct Answer: It may be greater than or less than 1
Class 2 Lever
Correct Answer: 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:
