58) A shaper is operated at 120 cutting strokes/minute and is used to machine a workpiece with 250 mm length and 120 mm width. When the feed is 0°6 mm/stroke, depth of cut is 6 mm and approach distance is 25 mm, the total machining time is

59) Short time fatigue life testing is done by which of the following ?

60) The CAPP approach that synthesizes a new process plan from scratch for each new part by using Knowledge Base and Inference Engine is

61) The value of Rankine's constant for mild steel is

62) A thin spherical shell of diameter (d) and thickness (t) is subjected to an internal pressure (P). What would be the tensile strength in the shell ?