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Theory of Structures - Engineering

Q1:

A close coil helical spring when subjected to a moment M having its axis along the axis of the helix

A it is subjected to pure bending

B its mean diameter will decrease

C its number of coils will increase

D all the above.

ANS:A - it is subjected to pure bending

If the coil helical spring is subjected to *Axial Force* then Torsion will produce.

If the coil helical spring is subjected to *Moment* then Bending will produce.