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Machine Design

Machine Design
The pitch of threads on a Jock nut in comparison to pitch of nut is

Very fine
Coarser
Same
Finer

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Machine Design
The largest diameter of an external or internal screw thread is known as

Major diameter
None of these
Minor diameter
Pitch diameter

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Machine Design
The resultant axial load on a bolt depends upon

External load applied
Initial tension due to tightening of the bolt
All of these
Relative elastic yielding of the bolt and the connected members

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Bolted joint
Knuckle joint
Cotter joint
Universal joint

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Machine Design
The permissible stress for carbon steel under static loading is generally taken as

7500-10,000 kg/cm²
3000-4000 kg/cm²
2000-3000 kg/m²
4000-4500 kg/cm²

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Machine Design
In a journal bearing, the load on the bearing is __________ to the axis of the journal.

Both A and B
Perpendicular
None of these
Parallel

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