Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

A. Manganese

B. Silicon

C. Nickel

D. Chromium

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

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  1. Upto the critical radius of insulation, added insulation, will
  2. Which of the following is not a characteristic observed in material failure by fatigue fracture?
  3. Which of the following terminology is used for the temperature at which new grains are formed in a metal?
  4. The two elements required to form substitutional solid solution should not have
  5. The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the
  6. All of the following alloying elements of steel increases hardness but sacrifice ductility, except
  7. When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the
  8. A solution which resists change in its pH value on addition of acid/alkali is called the __________…
  9. Cold heading or upsetting is categorised as the __________ process.
  10. A jig is used while __________ a hole.
  11. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the…
  12. Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
  13. During sensible heating of humid air
  14. Cold chisels hammers are made of
  15. Pick out the wrong statement about coating/electroplating of metals.
  16. __________ furnace is generally used in the non-ferrous foundries.
  17. A high pressure boiler generates steam at a pressure greater than __________ kg/cm2.
  18. In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb…
  19. Steel & cast iron pipes are produced by __________ casting.
  20. About __________ ton of coke is required in a cupola to produce one ton of casting.
  21. Which of the following is not an ore of copper?
  22. The best lubricants for a machine working at high temperature & load is
  23. Silicon percentage in silicon steel used for electrical equipments is about
  24. Copper deposits are found in India at the following location:
  25. Lap joints are preferred over butt joints in soldering/brazing, because these joints are
  26. Vernier calipers cannot be used to measure the
  27. The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
  28. Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________…
  29. The value of for air & most common gases can be safely assumed to be
  30. Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling…