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Machine Design

Machine Design
The rivet head used for boiler plate riveting is usually

Snap head
Counter sunk head
Conical head
Pan Head

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Machine Design
Multiple threads are used to secure

High efficiency
High mechanical advantage
High load lifting capacity
Low efficiency

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Machine Design
If b denotes the face width and L denotes the cone distance for a bevel gear, then the bevel factor is written as

1 - (b/L)
1 - 2 b.L
b/2L
b/L

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Machine Design
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

Direct shear stress only
A combination of bending stress and direct shear stress
A combination of torsional shear stress and bending
Bending stress only

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Machine Design
When a close coiled helical spring is compressed, its wire is subjected to

Compression
Shear
All of these
Tension

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Machine Design
When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the

Initial tension
Initial tension or external load, whichever is greater
Sum of the initial tension and external load applied
External load applied

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