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The elastic strain in copper is due to the

A. Motion of dislocations

B. Stretching of atomic bonds

C. Breakage of atomic bonds

D. None of the above

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Carbon is present in the form of __________ in grey cast iron.
  2. Aluminium is extracted from
  3. Pressure required to increase the density of water by about 1% is __________ atmosphere.
  4. A highly elastic material is deformed least on loading and retains its original form on removal of the…
  5. Ammonia leakage in the refrigeration system is detected by
  6. Which of the following materials has the maximum shrinkage allowance?
  7. One ton of refrigeration is not equivalent to the heat removal rate of
  8. Hot working of lead is carried out at
  9. Which one is neutral in character?
  10. Gantt charts are used for streamlining the
  11. Euler number is defined as the ratio of inertia force to __________ force.
  12. Nusselt number/Biot number varies
  13. The refrigerant freon-12 is chemically
  14. In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just…
  15. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an
  16. The approximate height of a blast furnace having a useful volume of 2000 m3 is about __________ metres
  17. High relative humidity decreases the evaporative process and as the temperature is increased, the relative…
  18. The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
  19. Boiler tube size is specified by its thickness and __________ diameter.
  20. Which of the following relationships is correct for relating the three elastic constants of an isotropic…
  21. Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other…
  22. Which of the following does not discharge the dust collected as a dry solid?
  23. Cupola produces __________ iron.
  24. __________ is used for tying the steel columns to concrete foundation.
  25. The atmospheric temperature during melting of ice/snow (in the atmosphere)
  26. Austempering process results in the formation of __________ structure.
  27. A material being tested for endurance strength is subjected to the __________ load.
  28. Stainless steel is welded with difficulty because of
  29. Notched bar test is used for testing the __________ of a material.
  30. Dislocation cross-slip is difficult in those materials, which have