Machine Design
The endurance limit of a material with finished surface in comparison to rough surface is

More
More or less depending on quantum of load
Same
Less

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
A woodruff key is

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

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Cold working

Increases the fatigue strength
Has no influence on fatigue strength
Alone has no influence on fatigue strength
Decreases the fatigue strength

ANSWER DOWNLOAD EXAMIANS APP