Engineering Materials When low carbon steel is heated up to lower critical temperature The grain size increases very rapidly There is no change in grain size The grain size first increases and then decreases very rapidly The average grain size is a minimum The grain size increases very rapidly There is no change in grain size The grain size first increases and then decreases very rapidly The average grain size is a minimum ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The lower critical temperature Depends upon the rate of heating Increases as the carbon content in steel increases Decreases as the carbon content in steel increases Is same for all steels Depends upon the rate of heating Increases as the carbon content in steel increases Decreases as the carbon content in steel increases Is same for all steels ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Eutectoid steel contains following percentage of carbon 0.003 0.008 0.0002 0.0063 0.003 0.008 0.0002 0.0063 ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Cementite consist of 6.67% carbon and 93.33% iron 13% cementite and 87% ferrite 13% ferrite and 87% cementite 13% carbon and 87% ferrite 6.67% carbon and 93.33% iron 13% cementite and 87% ferrite 13% ferrite and 87% cementite 13% carbon and 87% ferrite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite. None of these More than Equal to Less than None of these More than Equal to Less than ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Nodular iron has High tensile strength High machinability All of these Low melting point High tensile strength High machinability All of these Low melting point ANSWER DOWNLOAD EXAMIANS APP
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