#2026  Most electrical shock in the welding industry results from the welder contacting:   	1	bare or poorly insulted conductors.   	electrode holders.   	ungrounded welding machines.   	wet welding cables.   	   	
#2027  The workpiece being welded and the frame of electrically powered machines must both be grounded.   	1	True   	False   	   	   	   	
#2028  Dry wooden boards are adequate to insulate the welder from potential electrical shock when working on earth surfaces.   	1	True   	False   	   	   	   	
#2029  Flash burns to the eye can result in:    	4	immediate but temporary pain.   	temporary loss of sight.   	very small areas of bleeding in the retina.   	infection.   	   	
#2030  Flash burns result in an injury most like those caused by:    	3	an electric shock.   	a puncture wound.   	sunburn.   	an abrasive wound.   	   	
#2031  The type of light that causes flash burns is:    	2	infrared.   	ultraviolet.   	high frequency visible light.   	low frequency visible light.   	   	
#2032  The hot pass should:    	2	make a convex weld bead.   	burn out trapped slag.   	ensure deep penetration.   	only be used on open root welds.   	   	
#2033  Taking a weld certification test under one agency's specifications:   	3	qualifies a person to weld on materials of the same size and thickness under any other agency's specifications.  	qualifies a person to be a welder for life.   	may help a person to be able to pass other agency's tests that are similar.  	all of these   	   	
#2034  Moving an E7018 electrode too far ahead of the molten weld pool will:   	3	allow the molten weld pool size to be controlled.   	make the bead penetration deeper.   	cause porosity.   	help to control the formation of icicles on vertical welds.   	   	
#2035  An irregular hot pass surface has what effect on the acceptability of a weld?   	1	There is little or no effect on the acceptability of the completed weld.  	All of the irregular surface must be completely removed before welding continues.  	c. An irregular surface will prevent the weld from passing codes or standards.  	d. An irregular surface is a weld defect, and it must be removed.  	   	
#2036  Stringer beads used for the filler pass of a weld should be overlapped:   	2	25%.   	50%.   	75%.   	35%.   	   	
#2037  How wide should a cover pass be?    	2	not more than one-quarter wider than the groove opening   	not more than 1/8 in. (6 mm) wider than the groove opening   	at least 1/4 in. (6 mm) wider than the groove opening   	as wide as possible in order to add strength   	   	
#2038  The most frequently required angle for a V-groove is:    	3	45 degs.   	35 degs.   	60 degs.   	37 1/2 degs.   	   	
#2039  Why are plates 3/8-in. (10-mm) thick or thicker grooved before welding?   	3	to prevent distortion   	to control undercut   	to allow for deeper penetration   	both a and c   	   	
#2040  The hot pass:    	2	melts the silicon dioxide (slag) on the root pass and floats it to the surface of the hot pass bead.  	floats the silicon dioxide (slag) to the surface of the hot pass by melting the surrounding metal, but not the slag.  	should result in a bead that is convex (crowned in the middle) so that greater strength can be achieved.  	generally uses the same filler material that is used for the root pass on high strength open root welds.  	   	
#2041  When restarting a weld bead:    	1	the arc is struck in front of the bead, a long arc is held, and then slowly reduced as the rod is brought back to the crater. 	the arc is struck in the crater where a long arc is held until the rod heats up when a normal arc length can be resumed.  	the arc is struck in front of the bead and quickly returned to the crater using a normal arc length.  	the arc is struck in the crater, using a short arc length the rod is then moved in a circle to spread out the weld metal before moving down the plate. 	   	
#2042  A keyhole is:    	3	a weld defect found in the root pass.   	a weld defect found in the hot pass.   	a hole that precedes the root pass in an open root weld.   	a hole that is left after slag has been burnt out.   	   	
#2043  The cover pass should not be more than          wider than the top of the groove opening.   	2	3/16"   	1/8"   	1/16"   	The same wide as the top of the groove opening.   	   	
#2044  Air carbon arc cutting, unlike oxy-fuel cutting:    	3	does not require a skilled operator.   	can be done in the flat position only.   	does not require oxygen reactive metals.   	There are no differences.   	   	
#2045  The primary purpose(s) of the copper coating on air carbon arc electrodes is to:   	4	increase electrical conductivity.   	increase thermal conductivity.   	reduce accidental breakage.   	all of the above   	   	
#2046  The power source for air carbon arc cutting must have an open circuit voltage of, at least,:   	3	50 volts   	32 volts   	28 volts   	18 volts   	   	
#2047  The air pressure supplied to a air carbon arc torch should be between             .   	2	20 and 60 psi.   	80 and 100 psi.   	50 and 150 psi.   	90 psi or more.   	   	
#2048  Air carbon arc gouging is often used to:    	3	cut out new parts.   	improve part appearance.   	remove old welds.   	cut parts to size.   	   	
#2049  Air carbon arc requires that         be removed before work begins on the part.   	4	paint   	oil   	rust   	none of the above   	   	
#2050  The air carbon arc electrode should extend approximately inches from the torch when first starting a cut.   	1	6   	4   	10   	12