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Machine Design

Machine Design
For tight leakage joints, following type of thread is best suited

NPT (national pipe threads).
Metric
Square
Buttress

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Machine Design
The resultant axial load on a bolt depends on

Initial tension
All of these
External load applied
Relative elastic yielding (springness) of the bolt and the connected member

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Machine Design
Taper usually provided on cotter is

1 in 5
1 in 24
1 in 10
1 in 40

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Machine Design
A double fillet welded joint with parallel fillet weld of length 'l' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by

P/2.s.l
√2P/s.l
P/√2.s.l
2P/s.l

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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

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

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Machine Design
According to Indian standard specifications, 100 H6/g5 means that the

Basic size is 100 mm
None of these
Difference between the actual size and basic size is 100 mm
Actual size is 100 mm

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