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CWB WELDING INSPECTOR LEVEL III STUDY GUIDE QUESTIONS WITH 100% CORRECT ANSWERS { GRADED A+} $9.49   Add to cart

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CWB WELDING INSPECTOR LEVEL III STUDY GUIDE QUESTIONS WITH 100% CORRECT ANSWERS { GRADED A+}

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CWB WELDING INSPECTOR LEVEL III STUDY GUIDE QUESTIONS WITH 100% CORRECT ANSWERS { GRADED A+} Which of the following metals has the highest thermal conductivity? (a) carbon steel (b) stainless steel (c) aluminum - (c) The Ellingham diagram (a) is a plot of thermal conductivity agains...

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  • May 30, 2024
  • 13
  • 2023/2024
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CWB WELDING INSPECTOR LEVEL III

STUDY GUIDE QUESTIONS WITH 100%

CORRECT ANSWERS { GRADED A+}




Which of the following metals has the highest thermal conductivity?


(a) carbon steel


(b) stainless steel


(c) aluminum - ✔✔(c)


The Ellingham diagram


(a) is a plot of thermal conductivity against temperature,


(b) shows the free energy of oxide formation against temperature.


(c) shows the rate of oxidation of metals against temperature. - ✔✔(b)


True or False?

, A metal with a high negative free energy of oxide formation will generally require

greater shielding from the atmosphere during welding. - ✔✔True


Electricity can be conducted by:


(a) atoms and electrons.


(b) electrons and ions.


(c) only ions. - ✔✔(b)


Which of the following elements is often present in submerged arc fluxes to

improve arc stability?


(a) copper


(b) potassium


(c) nickel


(d) tungsten - ✔✔(b)


Thoria is added to tunsten electrodes for what purpose? - ✔✔To increase

thermionic emission by lowering the work function.


True or False?

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