Cold cracking in the heat affected zone of a high strength steel weld can take place because of the

A. Retained austenite

B. Martensite formation

C. Relatively high sulphur content in the base metal

D. Sufficient hydrogen present in the welding arc

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

You can do it
  1. Carnot cycle is also termed as the constant __________ cycle in thermodynamics.
  2. Fibre glass is a composite material of
  3. The dimensional formula of bulk modulus of elasticity is same as that of the
  4. Which of the following is an example of cathodic protection of metals against corrosion?
  5. Uniform ramming of sand in green sand moulding process leads to
  6. __________ number determines whether the fluid flow in an open channel is supercritical, critical or…
  7. __________ remains constant during the adiabatic cooling of moist air.
  8. Angular displacement can be measured suitably by a
  9. The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a…
  10. In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which…
  11. Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
  12. Cast iron contains __________ percent carbon.
  13. Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent…
  14. Preheating before welding is done to
  15. All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in…
  16. Which of the following phenomenon/ phenomena is/are diffusion controlled?
  17. Glycerine is used as a coolant in cooling of some engines instead of water, because
  18. Multistage compression of air as compared to single stage compression offers the advantage of
  19. Thermistors are used in __________ devices.
  20. At the point of boundary layer separation in fluid flow, the
  21. Vernier calipers cannot be used to measure the
  22. The best lubricants for a machine working at high temperature & load is
  23. The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam.
  24. The co-ordination number in simple cubic structure is
  25. Which of the following materials does not form adherent oxide film on surface?
  26. Which of the following is prone to cup and cone fracture?
  27. Which of the following properties of a solid is not dependent on crystal imperfection?
  28. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
  29. Cold working of a material results in increase in hardness, which is termed as the __________ hardening.
  30. The cathode in an electrochemical cell always carries