GATE 2023 MT – Previous Year Questions with Solutions
All 65 questions of GATE 2023 MT with answers and explanations. Read each question, then practise it by topic or as a full paper.
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- Question 1 – “You are delaying the completion of the task. Send contributions at the earliest.”
- Question 2 – References : : : Guidelines : Implement (By word meaning)
- Question 3 – PQRS is a parallelogram with PS = 7 cm, PT = 4 cm, and PV = 5 cm, as shown. PT and PV are perpendicular to QR and RS, respectively. What is RS in cm?…
- Question 4 – In 2022, June Huh was awarded the Fields medal, which is the highest prize in Mathematics. When he was younger, he was also a poet. He did not win any…
- Question 5 – A line of symmetry divides a figure into two parts that are mirror images about that line. The figure consists of 16 unit squares, three already…
- Question 6 – Human beings are one among many creatures that inhabit an imagined world. In this imagined world, some creatures are cruel. If in this imagined world,…
- Question 7 – To construct a wall, sand and cement are mixed in the ratio of 3:1. The cost of sand and that of cement are in the ratio of 1:2. If the total cost of…
- Question 8 – The World Bank has declared that it does not plan to offer new financing to Sri Lanka, which is battling its worst economic crisis in decades, until…
- Question 9 – The coefficient of x4 in (x-1)3(x-2)3 is .
- Question 10 – Which one of the following shapes can be used to tile (completely cover by repeating) a flat plane, extending to infinity in all directions, without…
- Question 11 – At one atmosphere, -Fe transforms to -Fe above 912 °C. The density of -Fe exceeds that of -Fe. Choose the correct statement.
- Question 12 – Formation of an ideal solution leads to
- Question 13 – The order O and degree D of (dy/dx)3=d2y/dx2+10 are
- Question 14 – At one atmosphere, iron and nickel oxidise according to: 2Fe+ O 22FeO, G=-527400+128T J. 2Ni+ O 22NiO, G=-471200+172T J. Temperature T is in kelvin.…
- Question 15 – For laminar fluid flow through a smooth circular tube, the relation between friction factor f and Reynolds number Re is
- Question 16 – Among the following options, a process for liquid-liquid separation is
- Question 17 – The most effective concentration step for sulfide ores is
- Question 18 – The gas distribution in a blast furnace is controlled by the shape of
- Question 19 – Diamond has low
- Question 20 – For self-diffusion in polycrystalline copper, let D L,D GB,D S denote lattice, grain-boundary, and surface diffusion coefficients. The correct…
- Question 21 – Two dislocations with Burgers vectors (a/2)[101] and (a/2)[011] react. The magnitude of the resultant Burgers vector is
- Question 22 – The mechanism of creep for a single crystal as depicted in the schematic is
- Question 23 – The value of x17x7-20x5+13x3x3+x-4 is
- Question 24 – Match the defects with metal-forming techniques. Column I: P. Cold shut Q. Zipper breaks R. Stretcher strains S. Center burst Column II: 1. Rolling 2.…
- Question 25 – In rolling, the point on the surface of contact between roll and sheet where surface velocity of the roll is equal to velocity of the sheet is…
- Question 26 – When cracks propagate in a brittle material, the following option(s) is/are correct
- Question 27 – Which of the following is/are responsible for reducing the high cycle fatigue life of a component?
- Question 28 – The non-destructive testing technique(s) for detecting internal defects in a steel component is/are
- Question 29 – The condition(s) for high degree of mutual substitutional solid solubility for two metals is/are
- Question 30 – The sum of eigenvalues of bmatrix4&3&2\\0&-1&2\\0&0&-3bmatrix is (integer).
- Question 31 – Three exam setters have probabilities 1/2,1/3,1/4 of setting an easy paper. Each sets one paper. The probability that at least one paper is easy is…
- Question 32 – Maximum number of phases that can be in equilibrium for a 5-component system at constant temperature and pressure is (in integer).
- Question 33 – A liquid of density 900 kg m-3 flows over a flat plate at free-stream velocity 0.1 m s-1. Its laminar boundary-layer thickness 0.2 m from the leading…
- Question 34 – A reaction’s rate constant at 400 K is three times that at 300 K. Its activation energy is kJ mol-1 (one decimal place). Given: R=8.314 J mol-1 K-1.
- Question 35 – The maximum of f(x)=4x3-24x2+36 on [-1,5] is (nearest integer).
- Question 36 – Let S,T,P,V denote entropy, temperature, pressure, and volume. Match Column I to the natural variables in Column II. Column I: A. Gibbs free energy B.…
- Question 37 – Match transport processes with their relationships. Column I: P. Molecular momentum transport Q. Molecular mass transport R. Molecular energy…
- Question 38 – For a supersonic oxygen jet in basic oxygen furnace steelmaking, choose the correct combination. 1. Converging–diverging nozzle 2.…
- Question 39 – An elutriator separates particles by size in flowing air, as shown. Assuming spherical particles and turbulent airflow, the suspended-particle…
- Question 40 – A fluid flow has velocity V=exyz(x i+z k). Its curl at (1,2,3) is
- Question 41 – Let =xy i+yz j+xz k. The closed surface S is bounded by x=0,y=0,z=0,x=3,y=2,z=1, and n is its outward unit normal. The flux S n\,dS is
- Question 42 – Match processes with applications. Column I: P. Fused salt electrolysis Q. Carbothermal reduction R. Oxidation-refining S. Matte converting Column II:…
- Question 43 – Match materials with their classes. Column I: P. Gallium arsenide Q. Barium titanate R. Iron–4 wt.% silicon S. Yttrium–barium–copper oxide Column II:…
- Question 44 – Match plots P–S in Section I (shown) with these functions in Section II: 1. y=2x/x 2. y=x2x 3. y= x/x 4. y=x x
- Question 45 – Match components with manufacturing processes. Column I: P. Crank shaft Q. Machine bed R. Automobile brake pad S. Beverage can Column II: 1. Sheet…
- Question 46 – Match welding techniques with the most appropriate applications. Column I: P. Submerged arc welding Q. Electroslag welding R. Shielded metal arc…
- Question 47 – Concerning the chemical potentials of components in a binary system at constant pressure, the correct statement(s) is/are
- Question 48 – Which of the following is/are the role(s) of coke in a blast furnace?
- Question 49 – Identify the INCORRECT statement(s)
- Question 50 – 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…
- Question 51 – A dislocation loop PQRSTU lies on the (111) plane of a cubic single crystal, with Burgers vector (1/6)[1 21]. Segments PU and PQ are parallel to [01…
- Question 52 – Compared to top gating, the effect(s) of bottom gating in sand mold casting is/are
- Question 53 – Choose the correct statement(s) in the context of fusion welding of austenitic stainless steel containing about 0.06 wt.% carbon.
- Question 54 – If vmatrixx+3&3x+4&4x+5\\-2&-3&-4\\-3&-4&-5vmatrix=0, then x= (integer).
- Question 55 – The enthalpy of formation of an A–B regular solution containing 80 at.% A is 3.36 kJ mol-1. The activity coefficient of A at 500 K in a solution…
- Question 56 – A thin plate is in plane stress with xx=110 MPa, yy=-50 MPa, and xy=-70 MPa. Its maximum principal stress is MPa (nearest integer).
- Question 57 – The chimney shown must provide natural draft P 0-P 1=1.0133103 Pa between furnace and chimney bottom. Air and flue-gas densities are constant with…
- Question 58 – Two circular surfaces A and B have emissivities, temperatures, and view factors as shown. Consider radiation only between A and B. Given =5.6710-8 W…
- Question 59 – Copper ore assaying 10 wt.% Cu is fed to a concentration plant at the rate of 100 tons/h. If the grades of concentrate and tailing are 30 wt.% Cu and…
- Question 60 – A polycrystalline BCC metal is examined with monochromatic X-rays of wavelength 0.25 nm. Its first diffraction peak has Bragg angle =30. The atomic…
- Question 61 – 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…
- Question 62 – An aqueous solution contains Fe2+ at 10-4 M, 298 K, and atmospheric pressure. The iron reduction potential is V (two decimal places). Given: E…
- Question 63 – An alloy obeys =11000.3, where , are true stress and strain. It is cold-drawn to an unknown strain and then tensile-tested. At maximum tensile load,…
- Question 64 – A specimen has maximum initial surface-crack size 1.5 mm and cyclic stresses max=300 MPa, min=0 MPa. For specimen geometric factor 1, use the graph to…
- Question 65 – 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…