List of top Nano Technology Questions

A system undergoes isothermal reversible expansion. What is true about the work done by the system?
What is the significance of the Gibbs-Helmholtz Equation in chemical thermodynamics?
If the enthalpy change for a process at constant pressure is negative, what type of process is it likely to be?
How can the concept of maximum work be used to determine the efficiency of a thermodynamic cycle?
The primary mechanism for deformation by twinning is
The effect of grain growth on the mechanical properties of a metal is
Cold Working is primarily characterized by
The main mechanism of plastic deformation in metals is
Which of the following crystal system has axes of equal length intersecting at 90-degree angles?
How does dislocation movement by cross-slip differ from climb?
The type of defect involves an atom from an impurity substituting for a lattice atom is
In a tensile test, a ductile material exhibits necking after reaching its ultimate tensile strength. If the ultimate tensile strength is 500 MPa, what happens to the stress in the necked region?
A steel bar exhibits a Hall-Petch relationship with a yield strength of 300 MPa when the average grain size is 10 micrometers. What trend in yield strength would you expect if the grain size is reduced to 5 micrometers?
A cast iron beam shows a brittle fracture on the stress-strain diagram. What does this indicate about its elongation at break?
The primary result of grain growth in a material is
The typical characteristic of a stress-strain diagram for cast iron
Which of the following is the effect of recrystallization on the properties of a material?
During cold working, a metal experiences a 10\% reduction in cross-sectional area. If the original cross-sectional area was 1 cm\(^2\), what is the new cross-sectional area?
A material undergoes recrystallization at 250\(^\circ\)C. If the material is heated to 300\(^\circ\)C, what process is most likely occurring?
An aluminum alloy sample has a yield stress of 250 MPa and a modulus of elasticity of 70 GPa. What is the strain at yield point?
A cubic crystal has a unit cell edge length of 0.4 nm. What is the volume of the unit cell?
If a face-centered cubic (FCC) crystal has a lattice parameter of 0.5 nm, calculate the atomic radius.
Calculate the Burgers vector magnitude for a body-centered cubic (BCC) crystal with a lattice constant of 0.3 nm, assuming the dislocation is along the shortest lattice vector.
Which method is used to improve the efficiency of heat transfer in regenerators?
In heat transfer, the Log Mean Temperature Difference (LMTD) is used in the design of