List of top Questions asked in AP PGECET- 2026

Rolling defect ``alligatoring'' causes

Lapses in forging occur due to

Cold shut occurs when

Brazing temperature is

Rockwell hardness measures

If diameter reduces by 50% during wire drawing, area reduces by

Lüders bands appear during

Creep occurs under

Nanomaterials have particle size in the range

The main controlling factor for hardenability is:

Austempering produces

Vickers hardness uses

The Burgers vector in a perfect dislocation represents

Which of the following elements, when alloyed in steel, is known to significantly lower the Martensite Start Temperature, thereby potentially increasing the amount of retained austenite after quenching?

Which alloying element is typically added to tool steels to achieve secondary hardening during tempering?

The process of carburization of steel, where carbon is diffused into the surface, is an example of

The mechanism of Nabarro-Herring creep involves

The d-spacing of an FCC lattice in [110] plane if lattice parameter (a)=3.60 A is:

The BCC lattice has systematic extinction rules where reflections only occur if the sum of the indices is

Which substance is known for very high thermal conductivity at room temperature?

The material with a band gap of 0 eV is

The following elements forms an isomorphous phase diagram

In martempering, the steel is quenched to a temperature:

In a TTT diagram, increasing alloying elements generally causes:

The effective number of atoms in a body-centered cubic (BCC) unit cell is