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Exercise: Machine Design
📂 Machine Design
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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
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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
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The strength of the un-riveted plate (
P
) per pitch length is equal to
A:
p
.
d
.σ
t
B:
p
.
t
.σ
t
C:
(
p
-
d
)σ
t
D:
(
p
-
d
)
t
σ
t
Answer:
B
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