Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

2.5
3
2.8
3.5

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In hydrodynamic bearings

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Machine Design