Miscellaneous In Metallurgy — Part 1 MCQs with Explanations

Propagation is the correct answer to “The extending the polymer chain by successive addition of monomers units is called”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

polyesters is the correct answer to “Dacron is an example of”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

inertia force is larger than the viscous force is the correct answer to “If Reynolds number is greater than 1, then the”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

550-750°C is the correct answer to “Which is the correct (degree) temperature range for spherodized carbide in low carbon steel”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

40 - 50 is the correct answer to “Which of the following torch angle used in the forehand welding process”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

High Grashof number and low Prandtl number is the correct answer to “The Nusselt number depends only on the Rayleigh number (product of the Grashof and Prandtl numbers) in the limit of”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Fiber strength is the correct answer to “Which of the following has a greater impact on the longitudinal strength of reinforced composites”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

10 m /sec is the correct answer to “For ferrous drawing, the drawing speed of multiple die machine is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

parallel to burger vector is the correct answer to “For edge dislocation slip plane is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

P-2, Q-3, R-5, S-1 is the correct answer to “Match the items in Group 1 with units/dimensions in Group 2 . Group 1 Group 2 P. Diffusivity 1. Lt -1 Q. Surface tension 2. L -2 t -1 R. Dislocation density 3. JL -2 S. Mass Transfer coefficient 4. J mol -1 .K -1 5. L -2”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Increases is the correct answer to “At a particular extrusion ratio, the strength . . . . . . . . along the length of the extruded product from front to back end.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Irregular is the correct answer to “Probability of nucleation throughout the system is . . . . . . . . In heterogeneous nucleation.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

30.5 is the correct answer to “A glass fibre reinforced epoxy composite is made with 60 wt.% unidirectional continuous glass fibres. The elastic moduli of the glass fibre and the epoxy matrix are 72.5 and 2.4 GPa, respectively. What is the elastic modulus of this composite along the fibre direction, in GPa? The densities of glass fibre and epoxy are 2.58 g/cm 3 and 1.14 g/cm 3 , respectively”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

$$K = \frac{{QX}}{{A\Delta T}}1$$ is the correct answer to “The the equation for thermal conductivity”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

increases is the correct answer to “The resistance to compressive deformation increases when length to thickness”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Increase of carbon % is the correct answer to “Hardness of steel increases with the”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

both A and B is the correct answer to “The motion of edge dislocation inside the materials may be”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Ta - Tb is the correct answer to “The infinitely long and wide parallel plates A and B are at temperature. Ta and Tb respectively. The energy transferred from relatively hotter plate A to plate B is proportional to”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

350 is the correct answer to “A steel rod was subjected to a fluctuating stress cycle that varied between a maximum of 400 MPa in tension to a minimum of 300 MPa in compression. What is the stress amplitude, in MPa”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

aligned is the correct answer to “The efficiency is taken to be unity for an oriented fiber composite in the . . . . . . . . direction.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

parallel to the original plane is the correct answer to “In climb an edge dislocation moves to an adjacent”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Swaging is the correct answer to “. . . . . . . . is done to reduce and finish work for desire size and shape, usually either round or hexagonal.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

All are correct is the correct answer to “The purposes of Recrystallization annealing are”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

bainitic transformation is the correct answer to “Diffusionless diffusion-controlled transformation phenomena is seen in”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Contact resistance is the correct answer to “In arc welding the electric arc is produced between the work and electrode by”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

⊥ is the correct answer to “Positive dislocations are represented by”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

plastic welding is the correct answer to “The Welding, in which the metals to be joined are heated to be plastic state and than forged together by external pressure without the addition filler material is known as”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

0 is the correct answer to “The ratio of the shear stress to the principal stress on a principal plane is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Infrared & ultraviolet rays is the correct answer to “In arc welding eyes need to be protected against”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

turbulent is the correct answer to “If Reynolds number is greater than 4000, then the flow is said to be”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

All of these is the correct answer to “Which is the solid state welding”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Newton-Raphson method is the correct answer to “Which one of the following methods is not used for numerically solving an ordinary differential equation (ODE)”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

infinity is the correct answer to “The bulk modulus of a material with a poisson's ratio of 0.5 is equal to”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

All are correct is the correct answer to “The hardness obtained of steel from the hardening process depends”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Mechanical energy = Potential energy + Kinetic energy + Pressure energy + Friction energy is the correct answer to “Bernoulli equation in the absence of electrical and magnetic field suggests”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

300 is the correct answer to “A body starts yielding when it is subjected to stress state with principal stresses of 250 MPa, 50 MPa and - 50 MPa. What is the yield strength of the material. in MPa, if Tresca yield criterion is obeyed”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Ds > DGB > DL is the correct answer to “A species can diffuse through the lattice (diffusion coefficient, D L ), along grain boundaries (diffusion coefficient, D GB ), and along free surface. (diffusion coefficient, D s ), Which of the following relations is correct”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Nylon is the correct answer to “Which of the following polymers does not have vinylic monomer units”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Silica has a significantly lower thermal expansion coefficient than magnesia at high temperatures is the correct answer to “Self supporting arches for furnace roofs can be fabricated using silica bricks but not using magnesia bricks. Why”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

1500°C is the correct answer to “Silicon carbides resist oxidation up to”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.