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Machine Design

Machine Design
If two springs are in parallel then their overall stiffness will be

Half
Double
Same
None of these

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Machine Design
In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft)

2d + 20 mm
2d + 13 mm
3.5 d
d + 17 mm

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Machine Design
A steel containing 0.8% carbon is known as

Hypereutectoid steel
Hypo-eutectoid steel
None of these
Eutectoid steel

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Machine Design
Gears are casted by

Centrifugal casting
Permanent mould casting
Slush casting
Sand mould casting

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Machine Design
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

1 d
2.5 d
1.5 d
2 d

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Shank
Head
Middle
Thread

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