Mechanical Engineering - Strength of Materials

31.
The design of thin cylindrical shells is based on
hoop stress
longitudinal stress
arithmetic mean of the hoop and the longitudinal stress
geometric mean of the hoop and longitudinal stress
Answer: Option
Explanation:
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32.
When a body is subjected to bi-axial stress i.e. direct stresses (σx) and (σy) in two mutually perpendicular planes accompanied by a simple shear stress (τxy), then maximum shear stress is
Answer: Option
Explanation:
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33.
The pull required to crush the rivet per pitch length is
p.tt
d.tc
π/4 x d2 x σt
π/4 x d2 x σc
Answer: Option
Explanation:
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34.
When a bar of length l and diameter d is rigidly fixed at the upper end and hanging freely, then the total elongation produced in the bar due to its own weight is (where w = Weight per unit volume of the bar)
Answer: Option
Explanation:
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35.
The deformation of the bar per unit length in the direction of the force is known as
linear strain
lateral strain
volumetric strain
shear strain
Answer: Option
Explanation:
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