Machine Design
In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

Equal to
Twice
Four times
Three times

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Machine Design
A tap bolt

Has pointed threads
Has head at one end and other end fits into a tapped hole in the other part to be joined
Has both the ends threaded
Has a head on one end and a nut fitted to the other

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