Machine Design
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as

Feather key
Gib-head key
Wood ruff key
Flat saddle key

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In a hydrodynamic lubricated bearing

There is no lubricant between the journal and the bearing
The lubricant is forced between the journal and the bearing, by external pressure
There is a thick film of lubricant between the journal and the bearing
There is a thin film of lubricant between the journal and the bearing

ANSWER DOWNLOAD EXAMIANS APP