GATE 2024 Mechanical Engineering PYQ

Question

For a ball bearing, the fatigue life in millions of revolutions is given by $L = \left(\frac{C}{P}\right)^n$, where $P$ is the constant applied load and $C$ is the basic dynamic load rating. Which one of the following statements is TRUE?

Accepted Answer

$n = 3$, assuming that the outer racing is fixed and inner racing is revolving

Answer

$n = 3$, assuming that the inner racing is fixed and outer racing is revolving

Answer

$n = 1/3$, assuming that the inner racing is fixed and outer racing is revolving

Answer

$n = 1/3$, assuming that the outer racing is fixed and inner racing is revolving