Machine Design
The shear plane in case of bolts should

Be parallel to axis of bolt
Be normal to threaded portion of shank
Never be across the threaded portion
Be across threaded portion of shank

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In hydrodynamic bearings

The oil film pressure is generated only by the rotation of the journal
Do not require external supply of lubricant
The oil film is maintained by supplying oil under pressure
Grease is used for lubrication

ANSWER DOWNLOAD EXAMIANS APP