Materials and Construction Presence of silicon in steel None of these Is in the form of free Si Indicates that steel is not deoxidised properly Decreases the blow holes formation tendency in castings None of these Is in the form of free Si Indicates that steel is not deoxidised properly Decreases the blow holes formation tendency in castings ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is not shipped in mild steel containers? Acetone Ammonia Ethyl alcohol Formic acid Acetone Ammonia Ethyl alcohol Formic acid ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ? Graphite Monel Kel-F and teflon Stainless steel Graphite Monel Kel-F and teflon Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Generally __________ are subjected to galvanising (i.e., zinc coating). Non-metals Non-ferrous metals Stainless steel Low carbon steels Non-metals Non-ferrous metals Stainless steel Low carbon steels ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The heat treatment process to which castings and the steel balls produced by cold heading are subjected is Annealing Tempering None of these Normalising Annealing Tempering None of these Normalising ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)? Induction motors Generators and small motors Armature of small motors/generators High frequency transformers Induction motors Generators and small motors Armature of small motors/generators High frequency transformers ANSWER DOWNLOAD EXAMIANS APP
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