Mechanical systems-Gears Quiz

What is the main reason for using involute tooth form in gears?

• It makes the gears look better.

• It allows for constant velocity ratio between gears.

• It makes the gears cheaper to produce.

• It reduces the need for lubrication.

What is essential for all gear teeth because they mesh with a rolling and sliding action?

• High temperature

• Good lubrication

• Frequent cleaning

• Lightweight materials

How is an involute curve on a gear generated?

• By cutting the gear with a special tool

• By unwinding a cord from around the cylinder

• By painting the gear surface

• By heating the gear

What is the circular pitch of a gear based on?

• The number of gears

• The diameter of the pitch circle

• The circumference of the pitch circle divided by the number of teeth

• The size of the gear teeth

What does the module of a gear determine?

• The weight of the gear

• The size of the gear teeth

• The color of the gear

• The speed of the gear rotation

Why is it essential for mating gears to have the same module?

• To increase the speed

• To change the color

• To ensure they mesh properly

• To make them look identical

What is the addendum of a gear tooth?

• The depth below the pitch circle

• The height above the pitch circle equal to the module

• The width of the tooth

• The length of the tooth

How much larger is the dedendum compared to the module?

• 0.5 times the module

• 1.25 times the module

• 2 times the module

• The same as the module

What are external spur gears made from?

• Hardened steel

• Plastic

• Wood

• Rubber

How do the teeth of external spur gears align with the gear axis?

• Parallel

• Perpendicular

• At a 45-degree angle

• Randomly