9. ‘The thickness of cylindrical shell is designed on the basis of :
(A) Longitudinal stress (B) Bending stress
(C) Circumferential stress (D) Hoop stress
10. The stress at which a material fractures under large number of reversal of stresses is called :
(A) Residual stress (B) Creep
(C) Endurance limit (D) Ultimate stress
11. Ina closed coiled helical spring subjected to axial load, other quantities remaining the same,
if the wire diameter is doubled, then the stif....
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