Machine Design Three different weights fall from a certain height under vacuum. They will take None of these Times proportional to weight to reach earth Same time to reach earth Times inversely proportional to weight to reach earth None of these Times proportional to weight to reach earth Same time to reach earth Times inversely proportional to weight to reach earth ANSWER DOWNLOAD EXAMIANS APP
Machine Design For hardening alloy steels and high speed steels, they are heated to 1300 to 1500°C 700 to 900°C 500 to 600°C 1100 to 1300°C 1300 to 1500°C 700 to 900°C 500 to 600°C 1100 to 1300°C 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/3a)] σ [1 + (b/2a)] σ [1 + (2a/b)] σ [1 + (3a/b)] σ [1 + (b/3a)] σ [1 + (b/2a)] σ [1 + (2a/b)] σ [1 + (3a/b)] ANSWER DOWNLOAD EXAMIANS APP
Machine Design Rivets are generally specified by Length of rivet Nominal diameter Diameter of head Thickness of plates to be riveted Length of rivet Nominal diameter Diameter of head Thickness of plates to be riveted ANSWER DOWNLOAD EXAMIANS APP
Machine Design A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be 3 3.5 2.8 2.5 3 3.5 2.8 2.5 ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is 0.65 0.5 0.35 0.2 0.65 0.5 0.35 0.2 ANSWER DOWNLOAD EXAMIANS APP
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