CWB Electrodes and Consumables
(Practice Test Questions)3
According to the AWS, the nominal composition of a brown colour-coded tungsten electrode is:
- ANSWERS-tungsten and 0.25% zirconium oxide (pure tungsten is green)
Alloyed tungsten electrodes have some advantages over pure tungsten electrodes. The
following is not one of those advantages: - ANSWERS-lower electrode cost
Spray, globular and short-circuiting are terms used in GMAW welding to describe - ANSWERS-
mode of metal transfer through the arc
The usable position for GMAW wires is not specified in the classification because it depends on:
- ANSWERS-a. the shielding gas
b. the wire diameter
c. the mode of metal transfer
CSA standard W59 requires that the electrode holding ovens for low-hydrogen electrodes be
kept at a minimum temperature of: - ANSWERS-120°C
When improved mechanical properties (toughness) of the weld metal deposit are required, the
flux should be formulated to transfer the smallest possible quantity of: - ANSWERS-Oxygen
When manufacturing fused fluxes, the temperature at which the ingredients are melted
together is: - ANSWERS-1,500°C to 1,700°C
An electrode that is to be used with DC electrode positive current only is: - ANSWERS-E4910
(Practice Test Questions)3
According to the AWS, the nominal composition of a brown colour-coded tungsten electrode is:
- ANSWERS-tungsten and 0.25% zirconium oxide (pure tungsten is green)
Alloyed tungsten electrodes have some advantages over pure tungsten electrodes. The
following is not one of those advantages: - ANSWERS-lower electrode cost
Spray, globular and short-circuiting are terms used in GMAW welding to describe - ANSWERS-
mode of metal transfer through the arc
The usable position for GMAW wires is not specified in the classification because it depends on:
- ANSWERS-a. the shielding gas
b. the wire diameter
c. the mode of metal transfer
CSA standard W59 requires that the electrode holding ovens for low-hydrogen electrodes be
kept at a minimum temperature of: - ANSWERS-120°C
When improved mechanical properties (toughness) of the weld metal deposit are required, the
flux should be formulated to transfer the smallest possible quantity of: - ANSWERS-Oxygen
When manufacturing fused fluxes, the temperature at which the ingredients are melted
together is: - ANSWERS-1,500°C to 1,700°C
An electrode that is to be used with DC electrode positive current only is: - ANSWERS-E4910
