Machine Design For applications involving high stresses in one direction only the following type of thread would be best suited ISO metric thread Buttress thread Acme thread Square thread ISO metric thread Buttress thread Acme thread Square thread ANSWER DOWNLOAD EXAMIANS APP
Machine Design Three different weights fall from a certain height under vacuum. They will take 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 None of these Times proportional to weight to reach earth ANSWER DOWNLOAD EXAMIANS APP
Machine Design An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'. One-eighth One-fourth Double One-half One-eighth One-fourth Double One-half ANSWER DOWNLOAD EXAMIANS APP
Machine Design When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring) (2WD/ πd3) × K (WD/ πd3) × K (8WD/ πd3) × K (4WD/ πd3) × K (2WD/ πd3) × K (WD/ πd3) × K (8WD/ πd3) × K (4WD/ πd3) × K ANSWER DOWNLOAD EXAMIANS APP
Machine Design Residual stress in materials Is independent of external loads Acts when external load is applied Becomes zero when external load is removed Is always harmful Is independent of external loads Acts when external load is applied Becomes zero when external load is removed Is always harmful ANSWER DOWNLOAD EXAMIANS APP
Machine Design At low temperatures (say 75°C) the notched bar impact value of steel Decreases markedly Remain same Increases markedly Depends on heat treatment carried out Decreases markedly Remain same Increases markedly Depends on heat treatment carried out ANSWER DOWNLOAD EXAMIANS APP
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