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/2 90° - φ 45° - φ/2 45° - φ 45° + φ/2 90° - φ 45° - φ/2 45° - φ 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/ 8D²n Gd⁴/ 8D3n Gd3/ 8D3n Gd⁴/ 4D3n Gd⁴/ 8D²n Gd⁴/ 8D3n Gd3/ 8D3n Gd⁴/ 4D3n ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a metal or alloy is cold worked, It is worked below recrystallization temperature Its hardness and strength increases Both (A) and (B) None of these It is worked below recrystallization temperature Its hardness and strength increases Both (A) and (B) None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design Silver based solder is used for Fusion welding Brazing Flaring Soft soldering Fusion welding Brazing Flaring Soft soldering ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shock resistance of steel is increased by adding Cobalt and molybdenum Nickel Nickel and chromium Chromium Cobalt and molybdenum Nickel Nickel and chromium Chromium ANSWER DOWNLOAD EXAMIANS APP
Machine Design Whether any core is required in wire ropes Yes Rarely Sometimes No Yes Rarely Sometimes No ANSWER DOWNLOAD EXAMIANS APP
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