List of top Metallurgical Engineering Questions

Equilibrium of a chemical reaction as viewed by kinetics is in a:
The difference of \( C_P \) and \( C_V \) of a substance is:
Ellingham diagram for metal–oxide system doesn’t give idea about:
In a reversible cycle, the sum of change in \( \frac{q}{T} \) is
(where \( q \) is heat absorbed and \( T \) is absolute temperature):
With increase in pressure, the bulk diffusion in catalyst pore:
The rate of homogeneous reaction is a function of:
“The heat capacity of a solid compound is equal to the sum of the heat capacities of its constituent elements”. This statement is known as:
Identify the noble metal:
Hydrogen overvoltage is observed in:
Tafel equation defines the relation between:
Second law of thermodynamics can be stated as:
An expression for Gibbs free energy is:
Identify the incorrect statement:
Electrodes used in anodizing process are:
Units for quantity of electricity are:
Identify the wrong statement:
“It is impossible for a heat engine to be 100% efficient.” This statement is related to:
If a system is completely ordered and the atoms are at rest at zero Kelvin, then the entropy of the system is:

A specimen containing maximum initial surface crack of size 1.5 mm is subjected to cyclic loading with \( \sigma_{max} = 300 \) MPa and \( \sigma_{min} = 0 \) MPa. Assuming specimen geometric factor of 1, and referring to the given figure, the crack growth rate in \(\mu\)m cycle\(^{-1}\) is ................... (round off to nearest integer). 

The alloy A (given in the phase diagram) is cooled slowly from the liquid state to just below the eutectic temperature. The ratio of weight fractions of pro-eutectic \(\alpha\) to eutectic \(\alpha\) is ................... (round off to 1 decimal place). 

 

For the given schematic TTT diagram of an eutectoid steel, the following statement(s) is/are true for the heat treatment schedules HT-1, HT-2, and HT-3. 

The mechanism of creep for a single crystal as depicted in the schematic is 

 

An elutriator is used to separate particles based on their sizes in flowing air as shown in the figure. Assuming spherical particles, the diameter (\(D_{50}\)) of the suspended particles which have 50% chance to report to overflow by turbulent air flow is expressed as 

For the equation \( \begin{vmatrix} x+3 & 3x+4 & 4x+5 \\ -2 & -3 & -4 \\ -3 & -4 & -5 \end{vmatrix} = 0 \) the value of \( x \) is ................... (in integer).
A 200 mm thick slab is rolled using 500 mm diameter rolls under cold rolling and hot rolling conditions, separately. The coefficient of friction is 0.04 in cold rolling and 0.4 in hot rolling. The ratio of maximum possible thickness reduction in cold rolling to that in hot rolling is ................... (round off to 2 decimal places).