Machine Design
In hydrostatic bearings

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

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Machine Design
A woodruff key is

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

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Machine Design
Form coefficient of spring is

Concerned with strength of wire of spring
Load required to produce unit deflection
Ratio of coil diameter to wire diameter
Its capability of storing energy

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