CWB WELDING INSPECTOR LEVEL 3 EXAM NEWEST
ACTUAL EXAM COMPLETE 200 QUESTIONS AND
CORRECT DETAILED ANSWERS
Terms in this set (46)
Which of the following metals
has the highest thermal
(c) conductivity?
(a) carbon steel
(b) stainless steel
(c) aluminum
The Ellingham diagram (b)
(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.
, True or False? True
A metal with a high negative free energy of oxide
formation will generally
require greater shielding
from the atmosphere
during welding.
Electricity can be conducted by: (b)
(a) atoms and electrons.
(b) electrons and ions.
(c) only ions.
Which of the following
elements is often present in
(b) submerged arc fluxes to
improve arc stability?
(a) copper
(b) potassium
(c) nickel
(d) tungsten
Thoria is added to tunsten electrodes for what purpose? To increase
ACTUAL EXAM COMPLETE 200 QUESTIONS AND
CORRECT DETAILED ANSWERS
Terms in this set (46)
Which of the following metals
has the highest thermal
(c) conductivity?
(a) carbon steel
(b) stainless steel
(c) aluminum
The Ellingham diagram (b)
(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.
, True or False? True
A metal with a high negative free energy of oxide
formation will generally
require greater shielding
from the atmosphere
during welding.
Electricity can be conducted by: (b)
(a) atoms and electrons.
(b) electrons and ions.
(c) only ions.
Which of the following
elements is often present in
(b) submerged arc fluxes to
improve arc stability?
(a) copper
(b) potassium
(c) nickel
(d) tungsten
Thoria is added to tunsten electrodes for what purpose? To increase
