Engineering Materials Which of the following has a fine gold colour and is used for imitation jewellery? Babbitt metal Aluminium bronze Silicon bronze Gun metal Babbitt metal Aluminium bronze Silicon bronze Gun metal ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials A material is known as allotropic or polymorphic if it Has its atoms distributed in a random pattern Has a fixed structure under all conditions Responds to heat treatment Exists in several crystal forms at different temperatures Has its atoms distributed in a random pattern Has a fixed structure under all conditions Responds to heat treatment Exists in several crystal forms at different temperatures ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following statements are true for annealing of steels? Steels are heated to 500 to 700°C Internal stresses are relieved Cooling is done slowly and steadily All of these Steels are heated to 500 to 700°C Internal stresses are relieved Cooling is done slowly and steadily All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In high speed steels, manganese is used to tougher the metal and to increase its Melting point Hardness Yield point Critical temperature Melting point Hardness Yield point Critical temperature ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The defect which takes place due to imperfect packing of atoms during crystallization is known as Surface defect None of these Point defect Line defect Surface defect None of these Point defect Line defect ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Steel contains Alloying elements like chromium, tungsten nickel and copper Elements like phosphorus, sulphur and silicon in varying quantities 80% or more iron 50% or more iron Alloying elements like chromium, tungsten nickel and copper Elements like phosphorus, sulphur and silicon in varying quantities 80% or more iron 50% or more iron ANSWER DOWNLOAD EXAMIANS APP
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