List of top Engineering Materials Science Questions asked in GATE PI

An Iron-Carbon alloy at room temperature has pro-eutectoid ferrite as a constituent in the microstructure, that formed above the eutectoid temperature. The alloy also has pearlite as another constituent that has formed below eutectoid temperature.
Which ONE of the following best describes this Iron-Carbon alloy?

A plain carbon steel sample of eutectoid composition is heat treated from austenizing temperature to achieve a microstructure consisting of ONLY bainite.
Which ONE of the following is the corresponding heat treatment method?

A thin cylinder has length $L$, diameter $d$, and thickness $t$. It is made of a material with modulus of elasticity $E$ and Poisson’s ratio $\mu$. When the cylinder is subjected to an internal pressure $P$, the change in length is