Machine Design The efficiency of a square threaded screw is maximum if the helix angle is equal to(Where φ = Angle of friction) 45° - φ 45° + φ/2 90° - φ 45° - φ/2 45° - φ 45° + φ/2 90° - φ 45° - φ/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The pipe joint mostly used for pipes carrying water at low pressures is Spigot and socket joint Nipple joint Union joint Socket joint Spigot and socket joint Nipple joint Union joint Socket joint ANSWER DOWNLOAD EXAMIANS APP
Machine Design The resilience of a bolt may be increased by Increasing its length Decreasing its length Decreasing its shank diameter Increasing its shank diameter Increasing its length Decreasing its length Decreasing its shank diameter Increasing its shank diameter ANSWER DOWNLOAD EXAMIANS APP
Machine Design The design of pin of a rocker arm of an I.C. engine is based on Shearing failure All of these Bending failure Bearing failure Shearing failure All of these Bending failure Bearing failure ANSWER DOWNLOAD EXAMIANS APP
Machine Design At low temperatures (say 75°C) the notched bar impact value of steel Remain same Depends on heat treatment carried out Increases markedly Decreases markedly Remain same Depends on heat treatment carried out Increases markedly Decreases markedly ANSWER DOWNLOAD EXAMIANS APP
Machine Design In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft) 5 d 2 d 4 d 3 d 5 d 2 d 4 d 3 d ANSWER DOWNLOAD EXAMIANS APP
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