Welding Practice Test

Take this free practice test to see how prepared you are for a welding certification test.

1.	Well-maintained arc welders do not pose an electrical __________ hazard.
	open
	shock
	short
	None of the above

2.	Which of the following is not important when selecting the type of welding electrode to use?
	metal weight
	metal type
	metal thickness
	welding position

3.	Which type of SMAW welding machine offers both AC and DC current when welding?
	transformer
	generator
	plasma arc
	transformer / rectifier

4.	In electric arc welding, why is changing polarity useful?
	controls heat and penetration depth
	reduces ultraviolet and infrared light rays
	reduces slag deposits
	reduces splatter

5.	The welding ____ helps to control the penetration and characteristics of the metal deposit.
	polarity
	type
	current type
	speed

6.	When spot welding galvanized steel, spatters can direct molten material into a welder�s _________.
	face
	eyes
	apron pocket
	shoe

7.	Photoelectric tracers are ________ machines that follow paper drawings of pencil and ink using a photoelectric cell.
	drawing
	accurate
	burning
	cutting

8.	In GMAW welding processes, the �consumable� electrode is in the form of a _____________.
	continuous wire
	tungsten electrode
	12-inch electrode
	36-inch electrode

9.	Polarity is __________________.
	the gas flow direction in a welding circuit
	the label on the probe holding the welding rod
	a pole used in welding
	the direction of current flow in a welding circuit

10.	Increasing sub-arc voltage will ______________.
	increase undercut
	increase spatter
	use more flux
	use less flux

11.	Welds made with high heat input will show reduction in ______________.
	toughness
	ductility
	mechanical strength
	fatigue strength

12.	A bead�s strength and appearance are influenced by ________________.
	electrode angle
	travel speed
	amperage setting
	all of the above

13.	The shielding gases used with GMAW and FCAW processes typically are ______________.
	oxygen and acetylene
	oxygen and natural gas
	argon or carbon monoxide
	argon, carbon dioxide, or helium

14.	If the welding current is too high or the arc length is too great, what is a likely result?
	an irregular shape
	the molten puddle will be too large and irregular
	melts off the electrode in large chunks
	an irregular, wide and splattered weld

15.	Which of the following does not cause undercutting?
	low amperage
	high amperage
	electrode held at a 90 degree angle
	arc too long

16.	AC welding machines house transformers to reduce input _______ and increase output _______ .
	voltage and wattage
	amperage and wattage
	voltage and amperage
	amperage and voltage

17.	Which electrode is designated for use in all welding positions?
	E6011
	E7108
	E6027
	E6011 and E7018

18.	When welding with a direct current, straight polarity, the electrode lead is connected to the ____________.
	positive terminal
	negative terminal
	ground
	both positive and negative terminals

19.	The flux coating on the electrode provides a gas shield that ____________.
	does not affect the welding process
	prevents slag from forming
	protects the molten metal
	is a by-product of the electrode

20.	An arc welding machine�s output is generally expressed as ________________.
	voltage
	amperage
	hertz
	wattage

21.	Amperage (current) setting, which depends upon size, position, electrode type, and metal thickness, should be adjusted _________________.
	when welding is not being done
	during the welding operation with a new electrode
	during the welding operation with a half-used electrode
	using an E6011 electrode on a quarter-inch mild steel plate

22.	Why is a long arc held at the beginning of a bead?
	it increases the electrode�s life
	it allows the molten puddle to develop quickly
	it cools the molten puddle quickly
	it creates more light to see the molten puddle

23.	In order to obtain maximum penetration with a high deposition rate, two different electrodes may be used on heavy welds.
	True
	False

24.	Electrodes are identified by classification systems established by the American Welding Society.
	True
	False

25.	The fourth digit in the electrode number designates the tensile strength.
	True
	False

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