Machine Design
A steel containing up to 0.15% carbon is known as

Mild steel
High carbon steel
Dead mild steel
Medium carbon steel

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Machine Design
Coaxing is the procedure of increasing

Metal resistance to corrosion by coating
Fatigue limit by over-stressing the metal by successively increasing loadings
Metal hardness by surface treatment
Metal strength by cycling

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Machine Design
According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

None of these
Equating shearing resistance to the crushing resistance of the rivets
Equating tearing resistance of the plate to the shearing resistance of the rivets
Equating tearing resistance of the plate to the crushing resistance of the rivets

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