Exercise: Strength Of Materials

Questions for: Strength Of Materials

If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60% and the percentage reduction in area of a specimen with same dimensions made of material 'B' is 40%, then
A:
the material A is more ductile than material B
B:
the material B is more ductile than material A
C:
the ductility of material A and B is equal
D:
the material A is brittle and material B is ductile
Answer: A
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According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end free is __________ the crippling load for a similar column hinged at both the ends.
A:
equal to
B:
less than
C:
more than
D:
Answer: B
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The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx and σy) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by
A:
OC
B:
OP
C:
OQ
D:
PQ
Answer: C
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When a rectangular beam is loaded transversely, the zero stress is developed on the neutral axis.
A:
True
B:
False
C:
D:
Answer: A
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When a closely-coiled helical spring is subjected to an axial load, it is said to be under
A:
bending
B:
shear
C:
torsion
D:
crushing
Answer: C
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