Exercise: Machine Design

Questions for: Machine Design

The ratio of endurance limit in shear to the endurance limit in flexure is
A:
0.25
B:
0.40
C:
0.55
D:
0.70
Answer: C
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A bolt of uniform strength can be developed by
A:
keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt
B:
keeping the core diameter smaller than the diameter of the unthreaded portion
C:
keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt
D:
none of the above
Answer: A
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A pressure vessel is said to be a thin shell, if the ratio of wall thickness to its diameter is equal to 1/10.
A:
Yes
B:
No
C:
D:
Answer: B
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In order to remove internal stresses produced by hardening the steel, the process usually adopted is
A:
tempering
B:
annealing
C:
normalising
D:
spheroidising
Answer: A
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Tapered roller bearings can take
A:
radial load only
B:
axial load only
C:
both radial and axial loads and the ratio of these being less than unity
D:
both radial and axial loads and the ratio of these being greater than unity
Answer: D
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