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Machine Design

Machine Design
The material generally used for aircraft components is

Stainless steel
High speed steel
Aluminium
Mild steel

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Machine Design
The stretching in a belt can be controlled by __________ the stress in the belt.

Both A and B
Reducing
None of these
Increasing

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Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Maximum compressive strength is 200 N/mm²
Carbon content is 2%
Maximum shear strength is 200 N/mm²
Minimum tensile strength is 200 N/mm²

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Machine Design
For a square key made of mild steel, the shear and crushing strength are related as

Shear strength is less than crushing strength
Shear strength is equal to crushing strength
None of these
Shear strength is greater than crushing strength

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Machine Design
In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to

1.75 d
1.25 d
1 d
1.5 d

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Machine Design
A locking device extensively used in marine type connecting rod ends is a

Jam nut
Ring nut
Castle nut
Sawn nut

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