Machine Design
When a metal or alloy is cold worked,

None of these
It is worked below recrystallization temperature
Its hardness and strength increases
Both (A) and (B)

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Zero at both the centroidal axis and outer surface of the member
Maximum at the centroidal axis and zero at the outer surface of the member
Zero at the centroidal axis and maximum at the outer surface of the member
Maximum at both the centroidal axis and outer surface of the member

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
When the speed of belt increases,

The coefficient of friction between the belt and pulley decreases
The power transmitted will increase
The coefficient of friction between the belt and pulley increases
The power transmitted will decrease

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
In a hydrodynamic lubricated bearing

There is no lubricant between the journal and the bearing
There is a thin film of lubricant between the journal and the bearing
The lubricant is forced between the journal and the bearing, by external pressure
There is a thick film of lubricant between the journal and the bearing

ANSWER DOWNLOAD EXAMIANS APP