During  the  optical  excitation  of  carriers  in  a  semiconductor,  the  minimum  energy  re‐ quired  to …

1.What is the maximum use of magnesium ? Ans: Magnesium is used to alloy with…

1.What do you understand by eutectic ? Ans: It is mechanical mixture of two or…

1.Define buckling factor. Ans: It is the ratio of the equivalent length of column to…

1.What is the structure of pure iron and whether it is soft or hard ?…

1.Explain the difference between ferrite, austenite and graphite ? Ans: Ferrite is the solid solution…

1.For which parts the Wahl factor and Lewis form factor used ? Ans: For springs…

1.What does thermal diffusivity of metals signify. Ans: Thermal diffusivity is associated with the speed…

1.Which element is added in steel to increase resistance to corrosion ? Ans: Chromium. 2.Whether…

1.What is the difference between isotropic and anisotropic materials ? Ans: If a material exhibits…