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Machine Design

Machine Design
In a marine flange coupling, the thickness of flange is taken as

d/3
d/2
d/4
3d/4

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Machine Design
Multiple threads are used to secure

Low efficiency
High efficiency
High mechanical advantage
High load lifting capacity

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.12
1.58
1.26
1.06

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Machine Design
The draw of cotter should not be more than

6 mm
8 mm
12 mm
3 mm

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

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

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Machine Design
The contact ratio for gears is

Greater than one
Less than one
Zero
None of these

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