Miscellaneous In Metallurgy — Part 2 MCQs with Explanations

Decrease the energy of dislocation is the correct answer to “Dissociation of dislocation occurs”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Above eutectoid temperature is the correct answer to “Austenising of samples for TTT diagram is done”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

All of these is the correct answer to “What are the operations of forging”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Mass balance is the correct answer to “The continuity equation is based on”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

ao/2[110] is the correct answer to “The burger vector for Face-centred cubic material is . . . . . . . .; Where ao is the lattice parameter.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Projection welding is the correct answer to “Multispot welding process is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Air is the correct answer to “Mark the matter with least value of thermal conductivity”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

ideal fluid is the correct answer to “A fluid which is incompressible & having no viscosity is known as”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

1.00 is the correct answer to “If the volume of a material does not change during deformation, then the Poisson's ratio should be”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

s-1 is the correct answer to “The SI unit of volumetric mass transfer coefficient is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Graphite, silicon carbide is the correct answer to “Which of the following materials are common for whiskers”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

S is the correct answer to “Which of the following Mohr's circles of a plane-stress condition corresponds to equibiaxial tension”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

The curve shifts rightward is the correct answer to “In an isothermal curve, which of the following is true when the temperature is increased”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

V is the correct answer to “Select the best material, which can be used for the applications mentioned below using the following data: Material k(W.) m -1 .K -1 ρ (kg.m -3 ) Cp (J.kg -1 .K -1 ) I 105 2320 687 II 425 10,500 234 III 238 2700 917 IV 2320 3500 519 V 63 2250 711 Choose a material which can be used as a heat reservior (to hold that)”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Planck's law is the correct answer to “The law governing the distribution of radiant energy over wavelength for a black body at a fixed temperature”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

P, Q, S is the correct answer to “If the choice of axes changes for an externally loaded solid material, the correct statements are: P. The components of stress tensor changes. Q. The octahedral shear stress does not change. R. The distortion energy changes. S. The yield loci in the space of prinicpal stresses do not change.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

both A and B is the correct answer to “The two partials repel each other and want to be as far as possible”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

$$F = \frac{9}{4} \times R + 32$$ is the correct answer to “The Rankine is converted into Fahrenheit”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

μ and θ have units of m2/s while μ has units of m/s is the correct answer to “In fluid flow, heat and mass transfer, one encounters (i) kinematic viscosity μ (ii) molecular diffusivity (θ) and (iii) thermal diffusivity (α) the units of these quantities are:”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

non-equilibrium defects is the correct answer to “Dislocations are”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

inversely with thermal conductivity is the correct answer to “Nusselt number/Biot number varies”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

910°C is the correct answer to “Maximum upper critical temperature in iron carbon diagram is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

4 is the correct answer to “In general, the ratio of mixing time and circulation in bioreactor is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

All of these is the correct answer to “What are the applications of cold rolled steel”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

90.91 is the correct answer to “Consider the following collection of polymer chains. No. of molecules 10 5 4 2 1 Molecular weight gm.mol -1 2800 3000 1200 3600 1000 Mer unit is ethylene. Atomic weights: carbon (12) and, hydrogen (1). Calculate number average degree of polymerisation.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Von Mises is the correct answer to “. . . . . . . . theory is applied for plastic deformation”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

polysaccharide is the correct answer to “Glycogen, a naturally occurring polymer stored in animals is a”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Gas welding is the correct answer to “Gray cast iron is usually welded by”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

platinum-platinum rhodium is the correct answer to “The following thermo couple may be used for measuring temperature upto 1873 K.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

No dislocations = extremely ductile material is the correct answer to “Which of the following facts about dislocations is false”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Shear stress fields is the correct answer to “A screw dislocation has”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Incompressible flow is the correct answer to “. . . . . . . . is that flow in which density fluid remains almost constant throughout flow.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Equal is the correct answer to “Particulate reinforcements have . . . . . . . . dimensions in all directions.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

stir speed is the correct answer to “. . . . . . . . decides the formation of vortex in stir casting process.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

∝ b2 is the correct answer to “Attraction force between dislocations of opposite sign is . . . . . . . .”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Thermosets is the correct answer to “In general, strongest polymer group is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

logarithmic is the correct answer to “At steady state and when the inner and outer walls of a long hollow cylinder are kept at two different temperatures, the unidirectional temperature variation along the thickness of the wall is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

k3 > k1 > k2 is the correct answer to “A furnace wall is made of three materials (I, II and III) of equal thickness and having thermal conductivity k 1 k 2 and k 3 respectively. The steady state temperature profile inside each material is shown in the figure. Thermal conductivities of the materials will vary as”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

0.016 is the correct answer to “There are 150 gearwheels in a box, out of which 112 are within the required tolerance, 21 are below and rest are above the required tolerance. If the selection is done without replacement, the combined probability of randomly selecting a gearwheel below the tolerance and then a second one above the tolerance is”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.

Black body is the correct answer to “A body which absorbs all incident thermal radiation.”. This question is standard in competitive examination syllabi for Miscellaneous In Metallurgy.