Exercise: Strength Of Materials

Questions for: Strength Of Materials

A closely coiled helical spring is of mean diameter (D) and spring wire diameter (d). The spring index is the ratio of
A:
1/d
B:
1/D
C:
D/d
D:
d/D
Answer: C
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The maximum shear stress is equal to the radius of Mohr's circle.
A:
Correct
B:
Incorrect
C:
D:
Answer: A
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The ratio of shear modulus to the modulus of elasticity for a Poisson's ratio of 0.4 will be
A:
5/7
B:
7/5
C:
5/14
D:
14/5
Answer: C
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The section modulus of a rectangular section about an axis through its C.G., is
A:
b/2
B:
d/2
C:
bd2/2
D:
bd2/6
Answer: D
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The bending moment at a section tends to bend or deflect the beam and the internal stresses resist its bending. The resistance offered by the internal stresses, to the bending, is called
A:
compressive stress
B:
shear stress
C:
bending stress
D:
elastic modulus
Answer: C
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