Machine Design Screws used for power transmission should have Very fine threads Strong teeth Low efficiency High efficiency Very fine threads Strong teeth Low efficiency High efficiency ANSWER DOWNLOAD EXAMIANS APP
Machine Design The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils) Gd⁴/ 8D3n Gd3/ 8D3n Gd⁴/ 8D²n Gd⁴/ 4D3n Gd⁴/ 8D3n Gd3/ 8D3n Gd⁴/ 8D²n Gd⁴/ 4D3n ANSWER DOWNLOAD EXAMIANS APP
Machine Design A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress) σ [1 + (b/2a)] σ [1 + (2a/b)] σ [1 + (b/3a)] σ [1 + (3a/b)] σ [1 + (b/2a)] σ [1 + (2a/b)] σ [1 + (b/3a)] σ [1 + (3a/b)] ANSWER DOWNLOAD EXAMIANS APP
Machine Design The lead angle of a worm is 22.5°. Its helix angle will be 22.5° 67.5° 90° 45° 22.5° 67.5° 90° 45° ANSWER DOWNLOAD EXAMIANS APP
Machine Design A bolt of uniform strength can be developed by Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the core diameter smaller than the diameter of the unthreaded portion None of these Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the core diameter smaller than the diameter of the unthreaded portion None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by 1 mm for rivet diameter from 27 mm to 36 mm 0.5 mm up to rivet diameter of 24 mm 2 mm for rivet diameter from 39 mm to 48 mm All of these 1 mm for rivet diameter from 27 mm to 36 mm 0.5 mm up to rivet diameter of 24 mm 2 mm for rivet diameter from 39 mm to 48 mm All of these ANSWER DOWNLOAD EXAMIANS APP
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