High speed steel tools retain their hardness upto a temperature of __________ °C.

A. 500

B. 750

C. 900

D. 1100

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

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  1. __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where…
  2. During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional…
  3. __________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.
  4. Which of the following is an acidic constituent of B.F. slag?
  5. In the acid Bessemer process, the hot metal should have the following composition.
  6. Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
  7. A fluid is termed as the Newtonian fluid, when the shear stress is __________ the velocity gradient.
  8. Galvanic corrosion cannot be prevented by
  9. In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres…
  10. Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which __________ with increase in the…
  11. Which of the following pairs is not correctly matched?
  12. The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D…
  13. Stresses encountered in the metal forming processes are less than the __________ of the material.
  14. Notched bar test is used for testing the __________ of a material.
  15. Stellite is a __________ material.
  16. Which of the following if present in iron ore, enhances its value?
  17. Wavelength of radiation emitted by a body depends on the __________ of its surface.
  18. Which of the following equipments is used for liquid dispersion?
  19. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is
  20. Wrought iron is not
  21. Pick out the wrong statement.
  22. The activity co-efficient of the solute in a dilute solution
  23. Joining of thin foils is preferred to be done by
  24. Maximum consumption of limestone is in the __________ industry.
  25. __________ is a non volatile film forming constituent of a paint.
  26. Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
  27. Air-petrol ratio in an automotive petrol engine is around
  28. Routing in production, planning & control is concerned with the
  29. __________ temperature remains constant during adiabatic saturation process of unsaturated air.
  30. Which one is neutral in character?