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Machine Design

Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

2 d
2.5 d
1.2 d
1.6 d

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Machine Design
A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, the junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is

3.6 N/mm² tension
3.6 N/mm² compression
7.2 N/mm² tension
7.2 N/mm² compression

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Machine Design
In a horizontal flat belt drive, it is customary to use

None of these
Bottom side of belt as slack side
Top side of belt as slack side
Idler pulley

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Machine Design
Crushing resistance required to crush the rivet per pitch length is

p.d.σc
n.d.t.σc
(p - d) t.σc
p.t.σc

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Machine Design
In case of pressure vessels having open ends, the fluid pressure induces

None of these
Circumferential stress
Shear stress
Longitudinal stress

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Machine Design
A bench vice has following type of threads

Square
Buttress
Metric
Acme

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