$2$ a$)$ Explain the mechanism for pressure development in a hydrodynamic bearing.

$10$

b$)$ Explain the Full$-$Sommerfeld boundary conditions for hydrodynamic journal bearing analysis. State its limitation$.$ How can it be overcome?

c$)$ Sketch the schematic of a typical hydrostatic bearing with all essential components.

d$)$ Explain why a hydrostatic thrust bearing with constant flow rate is self$-$compensating in nature.