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Mechanical Engineering
‣
Strength of Materials
Comments
Question
The polar modulus for a solid shaft of diameter (
D
) is
Options
A.
B.
C.
D.
Correct Answer
Strength of Materials problems
Search Results
1. The maximum deflection of a cantilever beam of length
l
with a uniformly distributed load of
w
per unit length is (where
W
=
wl
)
Options
A.
B.
C.
D.
Show Answer
Scratch Pad
Discuss
Correct Answer:
2. The point of contraflexure occurs in
Options
A. cantilever beams
B. simply supported beams
C. overhanging beams
D. fixed beams
Show Answer
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Discuss
Correct Answer: overhanging beams
3. 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.
Options
A.
wl
/2
B.
wl
C.
wl
2
/2
D.
wl
2
/6
Show Answer
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Discuss
Correct Answer:
wl
2
/6
4. When the shear force diagram is a parabolic curve between two points, it indicates that there is a
Options
A. point load at the two points
B. no loading between the two points
C. uniformly distributed load between the two points
D. uniformly varying load between the two points
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Correct Answer: uniformly varying load between the two points
5. The shear force at apoint on a beam is the algebraic __________ of all the forces on either side of the point.
Options
A. sum
B. difference
Show Answer
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Discuss
Correct Answer: sum
6. The polar moment of inertia of a hollow shaft of outer diameter (
D
) and inner diameter (
d
) is
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
7. The Poisson's ratio for cast iron varies from
Options
A. 0.33 to 0.37
B. 0.21 to 0.26
C. 0.31 to 0.34
D. 0.32 to 0.42
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Correct Answer: 0.21 to 0.26
8. The rivets are made from ductile material.
Options
A. Yes
B. No
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Correct Answer: Yes
9. The maximum shear stress of a beam of triangular section occurs above the neutral axis,
Options
A. Correct
B. Incorrect
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Correct Answer: Correct
10. For a beam, as shown in the below figure, the maximum deflection lies at
Options
A.
from
B
B.
from
A
C.
from
B
D.
from
A
Show Answer
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Discuss
Correct Answer:
from
B
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