Machine Design A screw is said to be over hauling screw, if the Friction angle is less than helix angle Friction angle is equal to helix angle Friction angle is more than helix angle Efficiency of screw is 100% Friction angle is less than helix angle Friction angle is equal to helix angle Friction angle is more than helix angle Efficiency of screw is 100% ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be W/2A W/A 2W/A 3W/A W/2A W/A 2W/A 3W/A ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be 45 to 60% 70 to 83% 80 to 90% 63 to 70% 45 to 60% 70 to 83% 80 to 90% 63 to 70% ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to obtain bolt of uniform strength Increase its length Increase shank diameter Tighten die bolt properly Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread Increase its length Increase shank diameter Tighten die bolt properly Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread ANSWER DOWNLOAD EXAMIANS APP
Machine Design The following type of nut is used with alien bolt Slotted nut Any one of the above Hexagonal nut Castle nut Slotted nut Any one of the above Hexagonal nut Castle nut ANSWER DOWNLOAD EXAMIANS APP
Machine Design Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material) (p - d) t.σt p.t.σt p.d.σt (p - d) t.σt p.t.σt p.d.σt ANSWER DOWNLOAD EXAMIANS APP
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