List of top Metallurgy Questions asked in AP PGECET

Calculate the Pilling-Bedworth ratio when Fe oxides to FeO. The atomic weight of Fe is 55.8 gm, the atomic weight of Oxygen is 16 gm, density of Fe is 7.87 gm/cc and density of FeO is 5.70 gm/cc
TIG is especially useful in welding for the following alloys
Which of the following is a eutectic reaction?
Dislocation tangles are the regions of
Electrode is consumed in ____ welding process
Which is the top-down approach method for the synthesis of Nano materials?
Cold working of metal reduces its
The collapsible toothpaste tube is produced by ____ extrusion
Plastic goods are usually produced by
In Ellingham diagrams, the reaction that is parallel to the temperature axis is
Dental alloys are casted by ____ process
The ideal theoretical shape of a Riser is
Blow holes are casting defects caused by
Ellingham diagrams for M ~MOx reactions is a plot of
Peritectic reaction among the following is
The free energy changes at equilibrium is
For a spontaneous process
Entropy is a measure of
The main cause to exist congruent melting alloys in a given isomorphous system is
Degrees of freedom at triple point will be
Lead-free solders are made with
Which is the most weldable of all metals?
The formation of corrosion retarding films on metal surfaces is known as
Example of a sacrificial anode which is used in the protection of underground pipelines is
Enthalpy "H" is defined as