Exercise: Strength Of Materials

Questions for: Strength Of Materials

The Rankine's theory for active earth pressure is based on the assumption that
A:
the retained material is homogeneous and cohesionless
B:
the frictional resistance between the retaining wall and the retained material is neglected
C:
the failure of the retained material takes place along a plane called rupture plane
D:
all of the above
Answer: D
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The Poisson's ratio for cast iron varies from
A:
0.33 to 0.37
B:
0.21 to 0.26
C:
0.31 to 0.34
D:
0.32 to 0.42
Answer: B
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In the below figure, the stress corresponding to point D is
A:
yield point stress
B:
breaking stress
C:
ultimate stress
D:
elastic limit
Answer: C
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The bending moment of a cantilever beam of length l and carrying a gradually varying load from zero at free end and w per unit length at the fixed end is __________ at the fixed end.
A:
wl/2
B:
wl
C:
wl2/2
D:
wl2/6
Answer: D
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Two shafts 'A' and 'B' are made of same material. The shaft 'A' is solid and has diameter D. The shaft 'B' is hollow with outer diameter D and inner diameter D/2. The strength of hollow shaft in torsion is __________ as that of solid shaft.
A:
1/16
B:
1/8
C:
1/4
D:
15/16
Answer: D
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