Mechanisms Quiz

Which movement is used in a sewing machine needle?

• Rotary

• Linear

• Oscillating

• Reciprocating

What is the primary function of an idler gear in a gear train?

• To increase speed

• To change direction

• To increase torque

• To decrease size

What happens when two meshed gears rotate?

• They rotate in the same direction.

• They stop rotating.

• They rotate in opposite directions.

• They increase speed.

What angle do bevel gears typically operate at?

• 45°

• 60°

• 90°

• 120°

What is the typical angle between the shafts in a bevel gear system?

• 45°

• 60°

• 90°

• 180°

What is the gear ratio when both gears in a bevel gear system are the same size?

• 2:1

• 1:1

• 3:1

• 4:1

Which of the following is the main reason for using bevel gear?

• To change rotaional motion to linear motion

• To change rotational motion at a 90° angle

• To increase the speed

• To make sure the gears mesh properly

Where can you find a worm and wheel mechanism?

• In a bicycle chain

• In a tuning mechanism on string instruments

• In a car tire

• In a light bulb

What is one function of a worm in a worm and wheel mechanism?

• To increase speed

• To reduce speed and increase torque

• To change color

• To make noise

Which of these is NOT a function of a worm in a worm and wheel mechanism?

• To reduce speed

• To increase torque

• To drive a gear

• To change color