1. To produce the jog from the intersection of two dislocations, the necessary condition is
2. A thermally thin body is the one for which
3. Explanation of free energy can be done
4. An aluminium alloy rod of diameter 15 mm and length 120 mm is subjected to a tensile load of 35,000 N along its axis. The Young's modulus and Poisson's ratio for aluminium are 70 GPa and 0.33 respectively.
5. A box contains 5 white balls and 3 red balls. Two balls are withdrawn from the box randomly, one after another (without replacement). The probability that the two balls withdrawn are of different colour is
6. Brazing is done at
7. The density and corresponding crystallinity of two poly-propylene material are given below.
Density.kg.m-3
Crystallinity,%
904
62.8
895
54.4
The density of totally amorphous polypropylene (in kg.m-3) is:
| Density.kg.m-3 | Crystallinity,% |
| 904 | 62.8 |
| 895 | 54.4 |
8. Greater the amount of deformation
9. An ability of atoms molecules and ions to diffuse inside the material under the influence of concentration gradient.
10. Most of the thermosetting polymers are
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