Machine Design When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate) t.τu π/4 × d².τu πd.t.τu π/4 × d² × tτu t.τu π/4 × d².τu πd.t.τu π/4 × d² × tτu ANSWER DOWNLOAD EXAMIANS APP
Machine Design A self locking screw has Hole for inserting split pin Coefficient of friction is greater than tangent of load angle Course threads Fine threads Hole for inserting split pin Coefficient of friction is greater than tangent of load angle Course threads Fine threads ANSWER DOWNLOAD EXAMIANS APP
Machine Design Rankine Gordon formula for buckling is valid for Short column Very long column Short and long column Long column Short column Very long column Short and long column Long column ANSWER DOWNLOAD EXAMIANS APP
Machine Design In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called Normal pitch Module Axial pitch Diametral pitch Normal pitch Module Axial pitch Diametral pitch ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole) 2.5 d 1 d 2 d 1.5 d 2.5 d 1 d 2 d 1.5 d ANSWER DOWNLOAD EXAMIANS APP
Machine Design The connecting rod bolts are tightened up with initial tension greater than the external load so that Bolts are weakest elements The resultant load on the bolt would not be affected by the external cyclic load Bolts will not loosen during service Joint may not open up Bolts are weakest elements The resultant load on the bolt would not be affected by the external cyclic load Bolts will not loosen during service Joint may not open up ANSWER DOWNLOAD EXAMIANS APP
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