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

Grease is used for lubrication
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

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
For same pulley diameters, center distance, belt speed and belt and pulley materials,

Open and crossed belt drives transmit same power
Power transmission does not depend upon open and crossed types of constructions
Crossed belt drive transmits more power than open belt drive
Open belt drive transmits more power than crossed belt drive

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Machine Design