railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Materials Science Heat Treatment Process Normalizing
During normalizing process of steel, the specimen is heated :
1
Between the upper and lower critical temperature and cooled in still air.
2
Above the upper critical temperature and cooled in furnace
3
Above the upper critical temperature and cooled in still air
4
Between the upper and lower critical temperature and cooled in furnace