72) The metal suitable for bearings subjected to light loads is

73) A connecting rod subjected to an axial load may buckle in the plane perpendicular to the plane of motion of the connecting rod.

74) Which of the following is an antifriction bearing?

75) A connecting rod is four times strong in buckling about Y-axis than about X-axis.

76) In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft)