List of top Nano Technology Questions on Material Science

Which combination gives highest strength-to-weight ratio?

Vacancy diffusion coefficient: $D = D_0 \exp(-Q/RT)$

Two metals, A and B, have Stacking Fault Energies of $20\text{ mJ/m}^2$ and $160\text{ mJ/m}^2$ respectively. Which of the following is true regarding their deformation behaviour?

The hot working temperature of lead

Cross slip is observing

One of the following is not a strengthening mechanism:

Hall-Petch equation predicts the relation between grain size and

A composite material is composed of:

Two parallel edge dislocations of the same sign (same Burger's vector) are located on the same slip plane. As they approach each other, what happens?

At eutectic point, degree of freedom is:

Which of the following statements regarding mechanical twinning is FALSE?

According to the Gibbs Phase Rule (F = C - P + 2), at the triple point of a pure metal (e.g., where solid, liquid, and vapour coexist), the degrees of freedom F is

Seamless tubes can be produced by

Which of the following metal working operation is a direct compression process?

Yield point phenomenon observed in mild steel is due to the presence of

Cold working of metal is carried out at

Which one of the following elements is ferrite stabilizer?

Which of the following statement is wrong?

Which among the following is NOT a factor in Hume-Rothery rules of formation of substitutional solid solutions

In a Fibre-reinforced composite, the "Critical Fibre Length" ($l_c$) is defined as the length required for

Which combination of mechanical properties is typically shown by Ceramics?

The critical temperature of a superconductor is the temperature at which

Above Curie temperature, a ferromagnetic material becomes

Dielectric constant of a material measures

Soft magnetic materials are mainly used in