Machine Design
A woodruff key is

Capable of tilting in a recess milled out in the shaft
A tapered key with head at one end
Fitted in pairs at right angles
All of these

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In hydrostatic bearings

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

ANSWER DOWNLOAD EXAMIANS APP