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  1. Natural water contains approximately __________ percent of heavy water.
  2. Austempering process results in the formation of __________ structure.
  3. The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters…
  4. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
  5. A material being tested for endurance strength is subjected to the __________ load.
  6. __________ remains constant during the adiabatic cooling of moist air.
  7. Pick out the correct statement.
  8. Thermistors are used in __________ devices.
  9. Difference at any instant between the value of the controlled variable and the set point is called the
  10. Powder metallurgy technique is used in the production of __________ tools.
  11. Function of gear box is to
  12. The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and…
  13. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional…
  14. If a solid is compressed adiabatically in its elastic range, its __________ remains constant
  15. The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where,…
  16. In TIG welding, thoriated tungsten electrodes are used, because it
  17. Transformer cores are normally made from
  18. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
  19. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through…
  20. The materials which fracture even at small strains are termed as brittle, while those materials which…
  21. Enzymes belong to the category of
  22. Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at…
  23. Tumbling is the process of improving the __________ of the materials/parts.
  24. Spark plug is provided in a/an
  25. A dummy activity is used in PERT network to describe the
  26. Carbon supply in pack carburising process is in the form of
  27. Load cells used for the measurement of weight has
  28. The substance used as a smoke screen in warfare is
  29. Pipelines carrying various utilities in chemical industries are identified by their colour codes. The…
  30. __________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.