Engineering Materials Gun metal contains 70% copper and 30% zinc 70 - 78% copper and rest tin 85 - 92% copper and rest tin with little lead and nickel 90% copper and 10% tin 70% copper and 30% zinc 70 - 78% copper and rest tin 85 - 92% copper and rest tin with little lead and nickel 90% copper and 10% tin ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When medium carbon steel is heated to coarsening temperature The average grain size is a minimum The grain size first increases and then decreases very rapidly There is no change in grain size The grain size increases very rapidly The average grain size is a minimum The grain size first increases and then decreases very rapidly There is no change in grain size The grain size increases very rapidly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which is false statement about case hardening? Case hardening is done by Cyaniding Induction hardening Electroplating Nitriding Cyaniding Induction hardening Electroplating Nitriding ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The machinability of steel is improved by adding Sulphur, lead and phosphorus Nickel Nickel and chromium Chromium Sulphur, lead and phosphorus Nickel Nickel and chromium Chromium ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Ductility of a material can be defined as Ability to recover its original form All of these Ability to undergo large permanent deformations in compression Ability to undergo large permanent deformations in tension Ability to recover its original form All of these Ability to undergo large permanent deformations in compression Ability to undergo large permanent deformations in tension ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron. None of these Free graphite Both A and B Cementite None of these Free graphite Both A and B Cementite ANSWER DOWNLOAD EXAMIANS APP
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