Exercise: Machine Design

Questions for: Machine Design

In cyclic loading, stress concentration is more serious in
A:
brittle materials
B:
ductile materials
C:
brittle as well as ductile materials
D:
elastic materials
Answer: B
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For circumferential joint in boilers, the type of joint used is
A:
butt joint with single cover plate
B:
butt joint with double cover plate
C:
lap joint with one ring overlapping the other
D:
any one of the above
Answer: C
No answer description is available. Let's discuss.
Wahl's stress factor __________ very rapidly as the spring index decreases.
A:
increases
B:
decreases
C:
D:
Answer: A
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Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be
A:
2
B:
4
C:
8
D:
16
Answer: D
No answer description is available. Let's discuss.
The strength of the un-riveted plate (P) per pitch length is equal to
A:
p.dt
B:
p.tt
C:
(p - dt
D:
(p - d)tσt
Answer: B
No answer description is available. Let's discuss.
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