Machine Design
Which of the following spring is used in mechanical wrist watch?

Helical compression spring
Torsion spring
Belleville spring
Spiral spring

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
A woodruff key is

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

ANSWER DOWNLOAD EXAMIANS APP