Exam Question

### (a) Thin Shell Bearing: Definition and Construction
**Definition:**
A thin shell bearing is a precision-engineered, pre-finished component used to support rotating shafts, such as crankshafts and camshafts, in internal combustion engines. It is characterized by its thin wall cross-section relative to its diameter. The key principle is that the bearing itself is flexible and conforms to the shape of the rigid housing bore when installed with an interference fit, ensuring perfect contact for heat dissipation and support.
**Construction:**