Adding oxygen or carbon dioxide to an inert gas causes the shielding gas to become ____, which may cause ____ in some ferrous materials.

A. inert, oxidizing
B. oxidizing, spatter
C. oxidizing, porosity
D. inert, porosity


Answer: C

Trades & Technology

You might also like to view...

A(n) ______________________________ offers the convenience of showing only the new surfaces created by a cutting plane, without the complexity of showing the remaining surfaces on an object.

Fill in the blank(s) with the appropriate word(s).

Trades & Technology

FCA welding electrodes are available as seamed and ____________________ type electrodes.

Fill in the blank(s) with the appropriate word(s).

Trades & Technology

The resistance of the filament of the bulb, measured with a standard multimeter, is 16.7 ?. When the bulb is connected into a circuit and is operating at the rated values given above, determine a. The resistance of the filament. b. The efficiency of the bulb.

A GE SoftWhite Longlife lightbulb is rated as follows: PR = rated power = 60 W POR = rated optical power = 820 lumens (lm) (average) 1 lumen = Operating life = 1,500 h (average) VR = rated operating voltage = 115 V What will be an ideal response?

Trades & Technology

A transistor has values of IB = 80 ?A and ? = 190. Therefore, IC is

A) 80 ?A B) 15.2 mA C) 2.38 mA D) 15.2 ?A

Trades & Technology