GATE 2017-2018 :: GATE Metallurgical
- If σ and ε are true stress and true strain, respectively, the maximum true uniform strain that can be imparted to a material obeying σ = 1050ε0.25 is _________
- Arc welding is done using current, voltage and welding speed of 200 A, 20 V and 0.01 m/s, respectively. The heat input in kJ per unit length is _________
- Taylor series expansion of the function f(x) = x/(1 + x) around x = 0 will be
- A unit cell of an element has maximum linear density along the [110] direction. The packing density of its (100) plane is
- For an FCC metal, the ratio of interplanar spacing obtained from the first two peaks of the X-ray diffraction pattern is
- 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
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Match the metal in Group I with its corresponding ore in Group IIGroup I Group II(P) Ni (1) Monazite(Q) Th (2) Cassiterite(R) Pb (3) Penlandite(S) Sn (4) Galena
- The yield strength of a polycrystalline metal increases from 100 MPa to 145 MPa on decreasing the grain size from 64 μm to 25 μm. The yield strength of this metal (in MPa) having a grain size of 36 μm is
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