Machine Design - Mechanical Engineering Questions and Answers

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Euler's formula for a mild steel column is not valid if the slenderness ratio is

100

120

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The standard length of the shaft is

5 m

6 m

7 m

all of these

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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

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

equating shearing resistance to the crushing resistance of the rivets

none of the above

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When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will

have contact at the bottom most of the bearing

move towards right of the bearing making the metal to metal contact

move towards right of the bearing making no metal to metal contact

move towards left of the bearing making metal to metal contact