Match the following elements in Column I with their respective ores in Column II.
Match each crystal defect in Column I with the corresponding type in Column II.
Two randomly oriented polycrystalline copper samples with average grain sizes of 10 $\mu$m (Sample A) and 100 $\mu$m (Sample B) were tested at room temperature. Given: $E_A$ = Young's modulus of Sample A $E_B$ = Young's modulus of Sample B $Y_{SA}$ = Yield strength of Sample A $Y_{SB}$ = Yield strength of Sample B Which one of the following statements is CORRECT?
Which one of the following matrices is orthogonal?
Match the casting defects in Column I with the characteristic features in Column II.
The following are the activation energies for diffusion of carbon and iron at 773 K in polycrystalline BCC iron: P = Activation energy for diffusion of carbon in BCC iron through the lattice Q = Activation energy for diffusion of iron in BCC iron through the lattice R = Activation energy for diffusion of iron in BCC iron along the grain boundary Which one of the following statements is CORRECT?
Front tension is applied during cold rolling of a thin metal sheet. Which of the following statements is/are TRUE?
Which of the following statements is/are CORRECT when Ni is added as an alloying element to a low alloy steel?
Which of the following statements is/are CORRECT with respect to fusion welding and solid-state welding of metals and alloys?
Which of the following welding processes does NOT / do NOT utilize a consumable electrode?
For a two-dimensional field described by \( T(x, y) = \frac{1}{3} xy(x + y) \), the magnitude of its gradient at the point \( (1, 1) \) is .......... (rounded off to two decimal places).
X-ray diffraction using a monochromatic radiation of wavelength 0.154 nm is performed on powder samples of metal A (with FCC crystal structure) and metal B (with BCC crystal structure). If the first peak in both the cases occurs at a Bragg angle \( \theta = 20^\circ \), then the value of \(\frac{{Lattice parameter of metal A}}{{Lattice parameter of metal B}} = \ldots\ldots\ldots { (rounded off to two decimal places)}\) .
