Steel is welded using the __________ flame.

A. Carburising

B. Neutral

C. Oxidising

D. All (A), (B) & (C)

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

You can do it
  1. The most suitable material for die casting is
  2. The excess air required for the combustion of pulverised coal is of the order of about __________ percent.
  3. Oxyacetylene reducing flame is used while carrying out welding on
  4. The mechanism which changes the value of manipulated variable in response to the output signal from…
  5. 'Dikes' are low height walls made around the storage vessels meant for storing hazardous & inflammable…
  6. The dimensional formula of bulk modulus of elasticity is same as that of the
  7. The malleability of a material is the property by virtue of which it can be rolled or hammered into…
  8. Which of the following phenomenon/ phenomena is/are diffusion controlled?
  9. __________ has a negative co-efficient of linear expansion.
  10. Pipelines carrying various utilities in chemical industries are identified by their colour codes. The…
  11. Atomic __________ is a whole number for an element.
  12. Suitability of steel for its use in cable is judged by its strength in
  13. In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
  14. Hot working of lead is carried out at
  15. The most important consideration, while designing the refrigeration system of an aircraft is that the…
  16. With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
  17. Fibrous fracture is normally encountered in the __________ materials.
  18. Pick out the wrong statement.
  19. Pick out the correct statement.
  20. Projection welding & stud welding is categorised as the __________ welding.
  21. The transition temperature at which all the ferromagnetic materials become paramagnetic materials is…
  22. Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air…
  23. Electrochemical corrosion can occur, only if __________ is present in contact with metal.
  24. Water hammer is caused in steam carrying pipelines, because of
  25. Highest cutting speed is achieved by the __________ tool material.
  26. The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where,…
  27. Satellites burn off during re-entry to earth's atmosphere, because of the
  28. A solution which resists change in its pH value on addition of acid/alkali is called the __________…
  29. The escape velocity of a body on earth which is independent of its mass is about __________ km/second.
  30. Dew point temperature always gives an indication of the __________ of the moist air.