#1077  Plain carbon steel is basically an alloy of:    	1	carbon and iron.   	carbon, silicon, sulfur, manganese, and phosphorus.   	carbon, silicon, and manganese.   	carbon, sulfur, and phosphorus.   	   	
#1078  Low-carbon steel contains           or less carbon.    	3	1%   	3%   	0.3%   	0.03%   	   	
#1079  High-carbon steels have a tendency to be         if welded without preheating and postheating.   	4	hard and ductile   	brittle and strong   	ductile and soft   	hard and brittle   	   	
#1080  Weldability includes:    	4	metallurgy of the filler and base metals.   	heat treatments of the weldment.   	joint design.   	All of the above.   	   	
#1081  The abbreviation AISI stands for the American Institute of Steel Inspectors.   	2	True   	False   	   	   	   	
#1082  The meaning of the "1" in the four digit steel number 2140 is:    	2	.1% carbon content.   	one of the digits used to indicate an alloy series.   	approximately .1% of the major alloying element.   	that it can be welded in all positions.   	   	
#1083  Mild steel electrodes that are used to weld high carbon steel loose some of their normal ductility.   	1	True   	False   	   	   	   	
#1084  An injector gas mixing method:    	2	uses less oxygen than the mixing chamber method.   	can operate with low-pressure fuel gases.   	can cut through a thick plate.   	is used only on combination torch sets.   	   	
#1085  An oxyacetylene cutting torch tip may have more than preheating holes.   	4	4   	5   	6   	8   	   	
#1086  Higher preheat flame adjustment is required when:    	4	cutting thick materials.   	cutting round shapes.   	cutting oily metal.   	All of the above.   	   	
#1087  The difference between MPS and propane two-piece tips is that MSP tips are:   	3	made from copper, propane tips are made from high conductivity steel.  	are generally smaller than propane tips.   	not recessed while propane tips are recessed.   	All of the above.   	   	
#1088  A.  tip that is stuck to the cutting head may be removed by striking the back of the torch head with a hammer.   	1	True   	False   	   	   	   	
#1089  Proper seating of the tip in the torch head is determined by stopping the end of the tip with a thumb, turning on the acetylene and sniffing for a leak.  	2	True   	False   	   	   	   	
#1090  The proper procedure for cleaning a cutting tip is to first turn on a small amount of oxygen, then clean the holes in the tip with the proper sized cleaning drills and finally file the end of the tip flat. 	2	True   	False   	   	   	   	
#1091  A slight forward angle of the cutting tip when cutting in a straight line helps to:   	2	steady the hand holding the torch.   	blow oxides away from the cut.   	prevent beveling of the cut.   	A and B   	   	
#1092  The oxy-fuel process can be used to rapidly cut:    	4	magnesium.   	titanium.   	iron.   	All of the above.   	   	
#1093  "Kindling point" is:    	1	the minimum temperature at which a metal will burn.   	the maximum temperature necessary to cut metal.   	the melting point of metal.   	the maximum temperature of the torch flame.   	   	
#1094  Slag on cuts is due to:    	4	too long a coupling distance.   	too fast travel speed.   	too little preheat.   	incorrect oxygen pressure.   	   	
#1095  The two types of slag produced by oxy-fuel cutting are:    	3	light slag and heavy slag.   	dense slag and porous slag.   	hard slag and soft slag.   	oxidized and reoxidized slag.   	   	
#1096  Group F3 electrodes (E6010 and E6011) produce welds that are:    	4	wide and have little penetration.   	highly built up and have little spatter.   	narrow and have deep penetration.   	deeply penetrating and have little slag covering.   	   	
#1097  If the current is set correctly the end of the electrode should be discolored between:   	1	1/16" and 1/8".   	1/8" and 3/16".   	3/16" and 1/4".   	1/4" and 5/16".   	   	
#1098  If an electrode is overheated it will:    	4	produce too much spatter, but have a stable arc.   	produce a wide, high crowned bead.   	produce a deeply penetrating narrow bead.   	produce an unstable arc because some rod elements will be burned out.  	   	
#1099  A welder can prevent a weld from overheating by using a longer arc length.   	2	True   	False   	   	   	   	
#1100  Most SMAW welding jobs require an arc length that is between:    	2	1/16" to 1/8"   	1/8" to 3/8"   	1/8" to 3/16"   	1/4" to 3/8"