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  1. Which of the following heat treatment processes is usually applied to castings?
  2. Which of the following materials does not form adherent oxide film on surface?
  3. Which of the following phenomenon/ phenomena is/are diffusion controlled?
  4. Identify the correct statement.
  5. Oxyacetylene reducing flame is used while carrying out welding on
  6. __________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.
  7. The swift cup test evaluates the following property of a sheet metal.
  8. Biological shield in a nuclear reactor is generally provided to protect against the
  9. Hydrogen can be
  10. In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
  11. Dew point temperature always gives an indication of the __________ of the moist air.
  12. Air-petrol ratio in an automotive petrol engine is around
  13. Which of the following is not a principal alloying element for the structural steel?
  14. Air standard Otto cycle is more efficient than the diesel cycle for the same
  15. Plants produce carbohydrates from the CO2 present in the atmosphere by
  16. Out of the following, the most malleable material is
  17. The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 ×…
  18. Fibre reinforced plastic (FRP) are
  19. The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.
  20. The most important consideration in value engineering is the
  21. Alloys having more than 80% copper are generally more
  22. Force between the molecules of the same substance is called __________ force.
  23. A reduction in thermal resistance during heat transfer does not occur in the
  24. All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in…
  25. The difference between gross & net calorific values of fuel is due to the
  26. Stainless steel is welded with difficulty because of
  27. __________ iron is produced by the annealing of white cast iron.
  28. What is the pH of distilled water?
  29. __________ wire is never used for making the heating element.
  30. Fine grained steels have