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Machine Design

Machine Design
In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

Equal to
0.5 times
2 times
Double

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Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

15-30 m/s
3-15 m/s
1-3 m/s
30-50 m/s

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Machine Design
The cold working of metals is carried out __________ the recrystallization temperature.

At
Above
None of these
Below

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Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.55
0.33
0.4
0.5

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Machine Design
A shaft is subjected to

Bending stresses
Shear stresses
Combined bending and shear stresses
All of these

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Machine Design
The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils)

Gd⁴/ 4D3n
Gd3/ 8D3n
Gd⁴/ 8D²n
Gd⁴/ 8D3n

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