List of top Questions asked in Andhra Pradesh Post Graduate Engineering Common Entrance Test

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?
The type of defect involves an atom from an impurity substituting for a lattice atom is
How does dislocation movement by cross-slip differ from climb?
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?
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.
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?
In plane Couette flow, what determines the shear stress between the plates?
In a duct, if the flow enters at 1 kg/s and exits at 0.5 kg/s, what additional information is needed to use the continuity equation effectively?
Which method is used to improve the efficiency of heat transfer in regenerators?
For a fluid element in a steady, uniform flow, which of the following statements is true regarding the flow velocity at any point in the flow field?
In heat transfer, the Log Mean Temperature Difference (LMTD) is used in the design of
What parameter in boundary layer theory represents the thickness of the layer in which the velocity increases from zero at the surface to 99\% of the free stream velocity?.