Theory of Machine
Rectangular bar in a rectangular hole is the following type of pair

Partially constrained motion
Incompletely constrained motion
Freely constrained motion
Completely constrained motion

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a hydrodynamic journal bearing, there is

A thick film of lubricant between the journal and the bearing
A very thin film of lubricant between the journal and the bearing such that there is contact between the journal and the bearing
A forced lubricant between the journal and the bearing
No lubricant between the journal and the bearing

ANSWER DOWNLOAD EXAMIANS APP