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Consumable electrodes are used in the __________ welding.

A. Gas

B. Arc

C. Thermit

D. Resistance

Correct Answer : B.


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  2. Water hammer is caused in steam carrying pipelines, because of
  3. Wavelength of radiation emitted by a body depends on the __________ of its surface.
  4. Basicity of the slag in Indian blast furnace is in the range of
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  6. __________ property of a material is determined by the Herbert Pendulum device.
  7. In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external…
  8. Which of the following is a commonly used manometric liquid for low pressure range?
  9. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm2.
  10. Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect…
  11. Blast furnace slag is mainly molten
  12. Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare…
  13. Nusselt number/Biot number varies
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  15. One ton of refrigeration is not equivalent to the heat removal rate of
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  17. Carbon is present in the form of __________ in grey cast iron.
  18. Superheating of steam is done at constant
  19. One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C).…
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  21. Powder metallurgy is used to produce
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  23. Which of the following represents the correct time-temperature curve when a block of metal is heated…
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  27. Percentage of argon (by volume) in dry atmospheric air is about
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