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Maximum hardenability of steel depends upon its

A. Chemical composition

B. Carbon content

C. Grain size

D. Alloying elements content

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  1. In extrusion of metals, which of the following statement is true?
  2. Which of the following is used to produce draught in the locomotive boilers?
  3. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through…
  4. Multistage compression of air as compared to single stage compression offers the advantage of
  5. In electrical resistance welding, distortion results from the use of improper
  6. Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.
  7. Hot working of lead is carried out at
  8. The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
  9. Calorific value of __________ are almost same.
  10. Maximum permissible air velocity in pipelines is about __________ metre/second.
  11. __________ remains constant during the adiabatic cooling of moist air.
  12. Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
  13. Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent…
  14. Which of the following metals cannot be hot worked at room temperature?
  15. Which of the following materials has the poorest electrical conductivity?
  16. Specific __________ is a dimensionless quantity.
  17. Baffles provided on the shell side of a shell and tube heat exchanger are meant for
  18. At 100% relative humidity, the dew point temperature of moist air is
  19. The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a…
  20. Out of the following, the __________ pipe has the least corrosion resistance.
  21. __________ joint is mostly used for joining pipes carrying water at low pressure.
  22. Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other…
  23. Copper deposits are found in India at the following location:
  24. Property responsible for the talcum powder to cling to the skin is the
  25. During sensible cooling of air, its wet bulb temperature
  26. Pick out the wrong statement.
  27. Which of the following is the most suitable material of construction for the condenser tubes, where…
  28. Hooke's law
  29. The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling…
  30. Unit of surface tension in S.I. unit is