Semester 2: Module 2 -Gas Metal Arc Welding
All Type Welder Trades
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NAME *
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NAME OF THE ITI *
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MOBILE NUMBER *
1 : What type of safety equipment is worn while checking the welding joint of a overhead crane frame? *
2 points
2 : What is the name of welding process if thearc produced by a consumable metal electrode is protected by inert gas? *
2 points
3: What is the name of the part marked as ‘X’in the GMAW wire feed unit? *
2 points
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4 : What is the name of the part marked as ‘X’in the GMAW? *
2 points
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5 : How is thermit mixture ignited? *
2 points
6 : What is the name of part marked as ‘X’ inthe submerged arc welding? *
2 points
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7 : Which welding method starting of welding done by using steel wool or iron powder? *
2 points
8 : What are the gases mixed for shielding in FCAW? *
2 points
9 : How many types of flux cored wires are used in FCAW? *
2 points
10 : Which type of electrode provides protective slag in flux cored arc welding? *
2 points
11 : What device is used to protect face from UV and Infra-red radiation during welding? *
2 points
12 : What protective equipment (PPE) is used to protect hand from burning injury? *
2 points
13 : Which gas is generated during GMAW on using CO2 as shielding gas? *
2 points
14 : What type of lens shade is to be fixed in helmet while doing MIG welding? *
2 points
15 : What is the lens shade fitted in a helmet asper the recommendation of welding code for setting of 150 Amps for MMAW? *
2 points
16 : Which type of apron is suitable to protect from heat and radiation during welding? *
2 points
17 : What is the name of part marked ‘X’ in GMAW wire feed unit? *
2 points
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18 : Which angle of pre setting is to compensate distortion on horizontal single V butt joint metal thickness 10 mm and root gap 2mm ? *
3 points
19 : How many types of basic welding positionsin GMA welding? *
2 points
20 : Which is the weld position of GMA welding if the weld is deposited underside of the job? *
2 points
21: What type of joints are made by the groove welds in GMA welding? *
2 points
22 : What is the angle, marked as ‘X’ in the filletweld shown? *
2 points
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23 : Which shielding gas is used in MIG welding? *
2 points
24 : Which type of weld is developed electro slag welding? *
2 points
25 : How many types of metal transfer in GMAW/CO2 welding process? *
2 points
26 : What is the part marked as ‘x’ in GMAW wire feed unit? *
2 points
27 : What is the name of the part ‘X’ in theGMAW principle of CO2 welding? *
2 points
28 : What is the ability of metal to cut another metal? *
2 points
29 : What ampere range is required for setting 1.2 mm filler wire for welding mild steel in MIG /MAG welding? *
3 points
30 : What is the temperature produced bychemical reaction in thermit welding? *
2 points
31 : Which type of welding is to be used tomake joint of thick pipes of rails? *
2 points
32 : Where is electron beam generated,controlled and accelerated? *
2 points
33 : What is the source of heat to melt the workpiece in an electron beam welding? *
2 points
34 : Which welding process granulated flux isfed through hopper to the welding spot? *
2 points
35 : What are the positions used in SAW? *
2 points
36 : Which type of welds are often used to assist assembly or to maintain edge alignment during welding? *
2 points
37 : What is the usual torch angle tilt on eitherside of vertical in GMAW? *
2 points
38 : What defects occur to a weld joint, if it is provided with insufficient heat input? *
2 points
39: What is the solution if burn back occurs dueto irregular wire feeding in GMAW process? *
2 points
40 : Which metal surfacing method is ideal for thin layers that can flow to corner and edges of the job? *
2 points
41 : Which type of core wire is suitable for welding carbon steel, alloy steel and stainless steel under FCAW? *
2 points
42: What is the distinct differences between GMAW and FCAW equipments? *
2 points
43 : What is the name of metal transfer system in FCAW? *
2 points
44 : Why the argon and CO2 mixture is used in FCAW? *
2 points
45 : Why different type of pressure rollers are used in FCAW? *
2 points
46 : Which type of welding under FCAW, is more suitable for welding all types of steel? *
2 points
47 : What type of hand tool is used to open a gas cylinder in welding practice? *
2 points
48 : Why the welder’s cloth should be free from oil, grease etc, while welding? *
2 points
49 : Which electrode wire is more suitable for carbon steel fabrication in GMAW process? *
2 points
50 : Which metal transfer process in GMAW produces strong weld with least spatter? *
2 points
51 : Why the argon and CO2 mixing gas used inFCAW? *
2 points
52 : How the pre-heating temperature is checked before welding wrought iron or cast metals? *
2 points
53 : Which is the operation to relieve residual stresses from the welding joint? *
2 points
54 : Which is the only welding position electro slag welding process? *
2 points
55 : Why carbon and manganese are added to plain thermit mixture on rail welding? *
2 points
56 : What type of weld is used on prepared holes of overlap joints? *
2 points
57 : Which is the pipe joint for given pipe development? *
2 points
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58 : Which is the weld position of GMA welding if the filler metal is deposited from the upper side of the joint during welding? *
2 points
59: What is the type of weld position in which the weld metal is deposited under side of the joint? *
2 points
60 : What is the usual torch angle tilt on either side of vertical in GMAW? *
2 points
61 : What is the electrode inclination to the metal surface in T-joint welding of 10 mm thickness metal by down hand position? *
2 points
62 : What is the usual length of tack weld in a T joint in GMAW flat position welding? *
2 points
63 : How much root gap ‘x’ is maintained? *
2 points
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64 : What is the purpose of fitting clear glasses on either side of coloured glass in a helmet? *
2 points
65 : How the welder observes welding area of the joint in electron beam welding? *
2 points
66 : How to protect from the toxic fumes during welding operation? *
2 points
67 : What is the purpose of using copper coated filler wire in MIG / MAG welding? *
2 points
68 : What is the angle of inclination of weld torch for flat position in GMAW welding process? *
2 points
69 : How many Kgs weight of thermit is required against one Kg of wax? *
2 points
70 : Which is adjusted in electron beam welding to eliminate the defect of porosity? *
2 points
71 : What is the limitation for submerged arc welding process? *
2 points
72 : What ampere range required for setting 1.2 mm filler wire for welding mild steel in MIG/MAG welding? *
2 points
73 : Which combination of shield gas in GMAW process produce good arc stability for carbon steel? *
2 points
74: How the filler wire is fed in the GMAW welding process? *
2 points
75 : Which type of electrodes are used in MAG/ CO2 welding? *
2 points
76 : What is the range of electrode for MAG /CO2 welding? *
2 points
77 : What type of operation is generally used in GMAW? *
2 points
78 : Which heat treatment of steel increases hardness, but decreases strength and ductility? *
2 points
79 : Which heat treatment process produces only outer surfaces of job hardened, to some depth? *
2 points
80 : Which heat treatment process is employed to remove brittleness in a chisel? *
2 points
81 : What is the operation of heating steel to specific temperature and cooling suddenly? *
2 points
82 : What is the main purpose of ‘Normalising ’steel? *
2 points
83 : Which heat treatment process, if material is softened and suitable for machining? *
2 points
84 : What is the name of heat treatment process where the steel is reheated to a suitable temperature below the critical point (heating) to improve the toughness and ductility? *
2 points
85 : Which heat treatment process is very similar to annealing but the job are allowed to cool in air? *
2 points
86 : What type of test is used for vessels, tank sand pipe containing pressure? *
2 points
87 : What is the NDT method, used to detect surface and subsurface defects on ferrous metals,using iron power? *
2 points
88 : What Non-destructive test is done using coloured dye and fluorescent liquid to find minute cracks? *
2 points
89 : What is the test set up for weld specimen? *
2 points
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90 : Which welding process is done by chemical reaction between a metal oxide and metal? *
2 points
91 : How much time it takes for the thermitmould to cool, after welding by thermit process? *
2 points
92: What is the reason that obstructed joints cannot be welded by electron beam welding process? *
2 points
93 : How much gas flow rate is required to weld a butt joint with 0.8 mm dia MS filler rod of wire feed rate 3 - 4 m/min at 18 to 20 volts? *
2 points
94: What should be the initial angle of two plates in a T joint if the final angle between them is 90° after completion of welding? *
2 points
95 : What is percentage of deposition efficiency in FCAW process? *
2 points
96 : Which gas/mixture is likely to reduce the spatter loss in FCAW? *
2 points
97 : Which metal is welded with self shielded type FCAW? *
2 points
98: Which combination of metal and shielding gas give excellent cleaning action in GMAW welding process? *
2 points
99 : What is basic safety environmental condition for the welding area? *
2 points
100 : What is the trouble shooting to wire wrapping on drive rolls of wire feeder in GMAW? *
2 points
101 : Which is the remedy for the contraction of weld metal due to excess of heat input that moves the base metal changes the angle? *
2 points
102 : What is the operation to clean the cylinder valve before fixing the regulator to the argon cylinder? *
2 points
103 : What defect will occur in the weld metal if the arc voltage and travel speed is low in MIG /MAG welding? *
2 points
104 : What is the effect in MIG / MAG welding for a short stick out distance? *
2 points
105 : What is the weld defect if wire feed speed too high? *
2 points
106 : Which type of defect is caused if the gas flowing rate is uneven? *
2 points
107 : What is the difficulty in starting of arc in GMAW? *
2 points
108 : How to troubleshoot the burn back problem if the contact tip is plugged or worn out? *
2 points
109 : What do you call a weld joint having small holes/cavities due to entrapped gas packets? *
2 points
110 : What is the defect in a weld joint, in which the weld metal melting through base metal resulting in holes? *
2 points
111 : What is the name of the welding defect,with weld metal contracting during welding process? *
2 points
112: What is the name of the defect occuring to an unsteady hand in GMAW? *
2 points
113 : What defects occurs to a weld joint, if it is provided with insufficient heat input? *
2 points
114 : What gas combination will reduce spatter defect and improve arc stability in a MIG / MAG welding process? *
2 points
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