FCTC Written Prep
A rotating machine part with teeth or
What is a gear or cogwheel cogs, which mesh with another toothed
part to transmit torque
The ability of a force to cause rotation
What is torque
around an axis.
What are two or more gears working in a
A train or a gear train
sequence called
A simple machine because it can pro-
What can a gear train be considered and
duce a mechanical advantage through a
why
gear ratio
What is it called when two or more gears
Meshed
are touching
If the gears are touching, then the adja-
Opposite
cent gears move in ________ directions
When there are an ____ number of
meshed gears, then the last gear will
Odd
always turn in the same direction as the
first gear
Gears can change the ______, ______,
Speed, torque, and direction
and _______ of a power source
What is a non-rotating toothed part
called and what is produced when a gear A rack; a translation instead of rotation
meshes with one
A mechanical advantage is produced
What happens when two gears mesh
and the rotational speeds and torques
and one gear is bigger than the other
differ in an inverse relationship
A spur gear
What is the most simple type of gear and
- Cylinder or disk with teeth projecting
characteristics of it
radically
A belt and pulley system consists of
two or more pulleys
___________ connected by a belt
If the diameter of a pulley is double that
of it's connected pulley, how does it affect It halves it
the RPM
1/6
, FCTC Written Prep
Diameter of pulley A / diameter of pulley
B = 4/8, so pulley B will run ____ as fast 1/2
as pulley A.
Diameter of pulley C / diameter of pulley
D = 4/16, so pulley D will run _____ as 1/4
fast as pulley C
A wheel on an axle or shaft that is de-
signed to support movement and change
What is a pulley
of direction of a cable or belt along it's
circumference
To lift loads, apply forces, and to transmit
How are pulleys typically used
power
What is a sheave or a drum Another name for a pulley
Something that runs over the pulley in-
What is the drive element of a pulley
side the groove, like a rope, cable, belt,
system
or chain
A rope and pulley system that uses a sin-
gle continuous rope to transmit a tension
force around one or more pulleys to lift or
move a load
What is a block and tackle?
Odd (examples A, D, and E)
If the anchor knot is at the load then the
mechanical advantage will be ______
If the anchor knot is at the anchor then
Even (examples B and C)
the mechanical advantage will be _____
2/6
A rotating machine part with teeth or
What is a gear or cogwheel cogs, which mesh with another toothed
part to transmit torque
The ability of a force to cause rotation
What is torque
around an axis.
What are two or more gears working in a
A train or a gear train
sequence called
A simple machine because it can pro-
What can a gear train be considered and
duce a mechanical advantage through a
why
gear ratio
What is it called when two or more gears
Meshed
are touching
If the gears are touching, then the adja-
Opposite
cent gears move in ________ directions
When there are an ____ number of
meshed gears, then the last gear will
Odd
always turn in the same direction as the
first gear
Gears can change the ______, ______,
Speed, torque, and direction
and _______ of a power source
What is a non-rotating toothed part
called and what is produced when a gear A rack; a translation instead of rotation
meshes with one
A mechanical advantage is produced
What happens when two gears mesh
and the rotational speeds and torques
and one gear is bigger than the other
differ in an inverse relationship
A spur gear
What is the most simple type of gear and
- Cylinder or disk with teeth projecting
characteristics of it
radically
A belt and pulley system consists of
two or more pulleys
___________ connected by a belt
If the diameter of a pulley is double that
of it's connected pulley, how does it affect It halves it
the RPM
1/6
, FCTC Written Prep
Diameter of pulley A / diameter of pulley
B = 4/8, so pulley B will run ____ as fast 1/2
as pulley A.
Diameter of pulley C / diameter of pulley
D = 4/16, so pulley D will run _____ as 1/4
fast as pulley C
A wheel on an axle or shaft that is de-
signed to support movement and change
What is a pulley
of direction of a cable or belt along it's
circumference
To lift loads, apply forces, and to transmit
How are pulleys typically used
power
What is a sheave or a drum Another name for a pulley
Something that runs over the pulley in-
What is the drive element of a pulley
side the groove, like a rope, cable, belt,
system
or chain
A rope and pulley system that uses a sin-
gle continuous rope to transmit a tension
force around one or more pulleys to lift or
move a load
What is a block and tackle?
Odd (examples A, D, and E)
If the anchor knot is at the load then the
mechanical advantage will be ______
If the anchor knot is at the anchor then
Even (examples B and C)
the mechanical advantage will be _____
2/6
