Engineering :: Strength Of Materials
141.
In case of a beam subjected to pure bending
A.
The stress intensity in any fibre is uniform
B.
The nature of stress in any fibre is identical
C.
The stress intensity in any fibre is proportional to the distance of the fibre from the neutral axis
D.
The stress intensity in any fibre is proportional to the distance of the fibre from the load carrying end
E.
The stress intensity in any fibre is inversely proportional to the distance of the fibre from the bottom of the beam
Answer: Option C
Explanation:
142.
The efficiency of a riveted joint is defined as the ratio of actual strength of the joint to that of solid plate. In this strength of the joint is considered in
A.
Tension
B.
Compression (bearing)
C.
Shear
D.
Least of (A), (B) and (C) above
E.
None of the above
Answer: Option D
Explanation:
143.
While evaluating the strength of riveted joint in shearing, bearing or tension the calculations are based on
A.
Actual size of rivet
B.
Actual size of hole drilled for the rivet
C.
Mean of the size of hole and drilled hole
D.
Smaller of the two holes
E.
None of the above
Answer: Option B
Explanation:
144.
A boiler shell 100 cm diameter and plate thickness 12 mm is subjected to an internal pressure of 1.2 N/m2. The hoop stress will be
A.
45 N/m2
B.
50 N/m2
C.
135 N/m2
D.
155.5 N/m2
E.
180 N/m2
Answer: Option B
Explanation:
145.
The longitudinal strain for a specimen is 0.01 and it is found to undergo 1 mm change in its thickness. The thickness of the specimen will be
A.
10 mm
B.
100 mm
C.
1000 mm
D.
400 mm
E.
None of the above
Answer: Option B
Explanation:
146.
A continuous beam is one which is
A.
Infinitely long
B.
Supported at two points only
C.
Supported at more than two supports
D.
Fixed at the ends and simply supported at intermediate point
E.
None of the above
Answer: Option C
Explanation:
147.
The ratio of central deflection in a beam freely supported at both ends to that when the beam is fixed at both ends and subjected to a central load W in both the cases would be
Answer: Option E
Explanation:
148.
During suddenly applied impact loading the stress developed to gradually applied load is
A.
1
B.
1.5 times
C.
2 times
D.
?2 time
E.
4 times
Answer: Option C
Explanation:
149.
A pressure vessel is said to be thin walled when the ratio of internal diameter of the vessel and wall thickness is
A.
5
B.
10
C.
15
D.
More than 20
E.
There is no such relationship
Answer: Option D
Explanation:
150.
Hoop stress is
A.
Circumferential tensile stress
B.
Compressive stress
C.
Radial stress
D.
Longitudinal stress
E.
None of the above
Answer: Option A
Explanation:
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