1. Introduction to Gears

Try these first

1. 1.

   What is a gear?

   Hint

   Think about machines and how they operate.

2. 2.

   What does the term 'module' refer to in gears?

   Hint

   Consider how gear sizes relate to each other.

3. 3.

   What type of gear profile is the most commonly used?

   • A. Cycloidal
   • B. Involute
   • C. Bevel

   Hint

   Think about what you'll find in most machines.

4. 4.

   True or False: Backlash is the clearance between mating gear teeth.

   • True
   • False

   Hint

   Consider how gears must interact.

5. 5.

   A gear train consists of a spur gear with 20 teeth driving a helical gear with 40 teeth. What is the gear ratio?

   Hint

   Use the formula: Gear Ratio = Number of teeth on driven gear / Number of teeth on driving gear.

6. 6.

   Explain how the structure of a gear train affects the system's overall efficiency.

   Hint

   Think about how power flows through a system of gears.