Question

1. What is the Velocity Ratio of Gears/Chains.
2. When can a Machine be said to have Mechanical Disadvantage?

Answer 1

$\huge\sf\red{Answer:}$

⇏ The velocity Ratio of Gears/Chain are calculations such as $\sf\green{ (Driver : Driven). }$

⇏ It's calculated like $\sf \dfrac{Number \: of \: driver \: teeth \:gear}{Number \:of \: driven \: teeth \: gear}$.

⇏ Suppose the driver teeth gear is 10 and the number of driven teeth gear is 20, Then the Velocity Ratio we get would be $\sf \cancel{\dfrac{20}{10}} = \dfrac{2}{1}$.

$\sf\red {Step \: by \: Step \: Calculations:}$

⇏ $\sf VR = \dfrac{DRIVER}{DRIVEN}$

⇏ $\sf VR = \cancel{\dfrac{20}{10}}$

⇏ $\sf 2 \: VR = 2:1$

Therefore, 2:1 is the velocity ratio of the gear.