Machine Design
Antifriction bearings are

None of these
Hydrodynamic bearings
Thin lubricated bearings
Sleeve bearings

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Machine Design
The plasticity is the property of a material which enables it to

Retain deformation produced under load permanently
Regain its original shape after deformation when the external forces are removed
Draw into wires by the application of a tensile force
Resist fracture due to high impact loads

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Machine Design
The angle of twist of shaft is

Directly proportional to (shaft diameter)²
Directly proportional to (shaft diameter)⁴
Inversely proportional to (shaft diameter)²
Inversely proportional to (shaft diameter)⁴

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