Compressed dry air is used as the cutting fluid, while machining

A. Steel

B. Cast iron

C. Aluminium

D. None of these

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  2. Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.A.…
  3. Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an…
  4. Oxide layer formed on the non-ferrous metal surface after its annealing is
  5. During sensible cooling of air, its wet bulb temperature
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  7. Galvanic corrosion cannot be prevented by
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  10. __________ flux is used for the extraction of metal from its self fluxing ores.
  11. Which of the following is prone to cup and cone fracture?
  12. Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
  13. Cassiterite is an ore of
  14. __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where…
  15. Fibre reinforced plastic (FRP) are
  16. The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and…
  17. Normalising does not __________ of a metal.
  18. Cupola produces __________ iron.
  19. The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
  20. In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which…
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  23. The most abundant metal present in the earth's crust is;
  24. Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.
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  26. Pick out the wrong statement about coating/electroplating of metals.
  27. __________ has the highest melting point out of the following.
  28. Electrostatic separation of minerals from each other is based on their differences in the following…
  29. In the Bayer's process, bauxite is digested under pressure using
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