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Machine Design

Machine Design
The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)

d
1.2 d
0.8 d
0.5 d

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Machine Design
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as

Feather key
Gib-head key
Wood ruff key
Flat saddle key

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

Circumferential stress
Longitudinal stress
None of these
Shear stress

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Machine Design
Maximum principal stress theory is applicable for

All of these
Ductile materials
Elastic materials
Brittle materials

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Machine Design
Wire ropes as compared to cotton ropes

Can withstand shock loads
All of these
Offer silent operation
Are lighter in weight

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Machine Design
A double fillet welded joint with parallel fillet weld of length 'l' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by

P/√2.s.l
√2P/s.l
P/2.s.l
2P/s.l

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