Machine Design
When a metal or alloy is cold worked,

Both (A) and (B)
None of these
It is worked below recrystallization temperature
Its hardness and strength increases

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

Tolerance grade for the hole is 4 to 8 and for the shaft is 3 to 7
Tolerance grade for the shaft is 4 to 8 and for the hole is 3 to 7
Tolerance grade for the shaft is 6 and for the hole is 5
Tolerance grade for the hole is 6 and for the shaft is 5

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

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

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