Recrystallisation temperature of steel is __________ °C.

A. 50

B. 300

C. 500

D. 800

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  1. Preheating before welding is done to
  2. L.D. (Linz-Donawitz) converter is used in the production of
  3. If a solid is compressed adiabatically in its elastic range, its __________ remains constant
  4. Holes for riveting purposes should be preferably made by
  5. What is the value of entropy at 273°K?
  6. Baffles provided on the shell side of a shell and tube heat exchanger are meant for
  7. Cupola produces __________ iron.
  8. Capacity & power requirement for an air compressor working at high altitude compared to sealevel will…
  9. __________ is not used as a material of construction in thermocouples.
  10. For dynamic strain measurement, the Wheatstone bridge used is of __________ type.
  11. Isotropic materials have the same __________ in all directions.
  12. The noble metals
  13. In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient…
  14. __________ is the hardest material out of the following.
  15. Hydro-cyclone is a
  16. Carnot cycle is also termed as the constant __________ cycle in thermodynamics.
  17. Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
  18. Ammonia gas can be dried by
  19. __________ wire is never used for making the heating element.
  20. Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
  21. Pick out the wrong statement.
  22. Which of the following is not the function of a volute casing provided in a centrifugal pump?
  23. The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction…
  24. Which of the following is an ore dressing operation?
  25. A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation…
  26. In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates,…
  27. Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil,…
  28. Closeness of packing is maximum in case of __________ crystal lattice.
  29. For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship…
  30. A material in which the atoms are arranged regularly in some directions but not in others, is termed…