Engineering Materials When low carbon steel is heated up to lower critical temperature The grain size first increases and then decreases very rapidly The grain size increases very rapidly The average grain size is a minimum There is no change in grain size The grain size first increases and then decreases very rapidly The grain size increases very rapidly The average grain size is a minimum There is no change in grain size ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will First increase and then decrease Increase Decrease Remain same First increase and then decrease Increase Decrease Remain same ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following constituents of steels is softest and least strong? Cementite Austenite Pearlite Ferrite Cementite Austenite Pearlite Ferrite ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Following elements have face-centered cubic structure Mg, Zn, Ti, Zr, Br, Cd All of these A iron (below 910°C and between 1400 to 1539°C), W Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt Mg, Zn, Ti, Zr, Br, Cd All of these A iron (below 910°C and between 1400 to 1539°C), W Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The blade of a power saw is made of Malleable cast iron Boron steel High speed steel Stainless steel Malleable cast iron Boron steel High speed steel Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Thermoplastic materials are those materials which Do not become hard with the application of heat and pressure and no chemical change occurs Are used as a friction lining for clutches and brakes Are formed into shape under heat and pressure and results in a permanently hard product Are flexible and can withstand considerable wear under suitable conditions Do not become hard with the application of heat and pressure and no chemical change occurs Are used as a friction lining for clutches and brakes Are formed into shape under heat and pressure and results in a permanently hard product Are flexible and can withstand considerable wear under suitable conditions ANSWER DOWNLOAD EXAMIANS APP
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