Gears

A gear ratio is the ratio of the number of rotations of a driver gear to the number of rotations of a driven gear.

• True

• False

What is the gear ratio with a driving gear with 40 teeth and a driven gear with 8 teeth?

• 5

• 1/5

• 5/8

• 8/5

Making a _________________change is one of the easiest ways to change mechanical advantage in a mechanism or system to achieve the desired speed and/or torque.

• gear teeth

• Gear Ratio

• drastic

• position

Tags

NGSS.MS-PS2-1

NGSS.MS-ETS1-4

What do we call the gear connected to the input power source, such as a motor?

• Driven Gear

• Bigger Gear

• Smaller Gear

• Driving Gear

Which gear type is most suitable for transmitting motion between perpendicular shafts?

• Spur gear

• Helical gear

• Bevel gear

• Worm gear

A gear ratio is calculated by which of the following?

• Teeth of gear output : teeth of gear input

• gear shape input : gear shape output

• Speed : torque

What is the primary function of a worm gear?

• To increase speed

• To decrease speed and increase torque

• To change the direction of rotation

• To transmit power between parallel shafts

Tags

NGSS.MS-PS2-1

Which type of gear is used to change the direction of rotation between two shafts?

• Spur gear

• Bevel gear

• Worm gear

• Rack and pinion

Which of the following is a characteristic of spur gears?

• They can transfer motion between non-parallel shafts.

• They produce a lot of noise at high speeds.

• They are primarily used to increase torque.

• They are used to change the direction of motion.

What do we call the gear connected to the output, such as a wheel or mechanism in a system?

• Driving Gear

• Driven Gear

• Bigger Gear

• Smaller Gear

Tags

NGSS.MS-PS2-1