Gear Train Design - How to calculate gear trains mechanical engineering

The video tutorial explains the concept of gear ratios, RPM, and torque in gear systems. It provides examples using gears A, B, C, and D to demonstrate how these factors affect the speed, torque, and direction of gear rotation. The tutorial also covers the concept of compound gear trains and how they influence the mechanical output. The importance of considering gear size, input torque, and rotational speed in practical applications is emphasized.

What is the gear ratio if gear A has 8 teeth and gear B has 10 teeth?

• 1.5

• 1.25

• 2.0

• 0.8

If gear A rotates at 150 RPM, what is the RPM of gear B with a ratio of 1.25?

• 180 RPM

• 120 RPM

• 150 RPM

• 100 RPM

When gear C with 20 teeth is added, what is the resulting RPM if gear B outputs 120 RPM?

• 120 RPM

• 100 RPM

• 80 RPM

• 60 RPM

How does the addition of gear D with 8 teeth affect the RPM from gear C?

• Increases to 300 RPM

• Remains at 60 RPM

• Decreases to 50 RPM

• Increases to 150 RPM

In a compound gear train, if gear A has 8 teeth and gear B has 10 teeth, what is the torque of gear B if gear A has a torque of 20 Newton meters?

• 20 Newton meters

• 15 Newton meters

• 25 Newton meters

• 30 Newton meters