CSWIP_3(1)

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No. 1

QUESTION What two function in arc welding must be in equilibrium to enable a stable arc established

A

Arc Voltage

B

Current

C Wire / Electrode feed rate D 2

Metal burn off rate Welds made with high heat inputs show a reduction in one of the following properties

A

Ductility

B

Toughness

C Fatigue Strength D 3

Mechanical Strength The use of a cellulosic electrode is often made in the field. This is because

A

Hydrogen controle is needed

B

Iron powder in the electrode

C Higher arc voltage can be obtained D 4

Shoter arc voltage can be obtained The weld metal deposit of metal arc electrodes achieve its mechanical strength thrrough

A

The core wire

B

The flux coating

C Iron powder with the flux coating What constituent is needed in a coating of an electrode to prevent the formation of property in welding of a Rimming steel

5 A

Iron powder

B

Calcium fluoride

C Silicon D 6

Calsium carbonate In the welding of austinitic pipework the bore in usually purged with argon to

A

Prevent the formation of the porsity in the weld

B

Prevent the burn through in the root bead

C Prevent oxidation of the root bead D 7

Eliminate the formation of Hydrogen In MMA welding what parameter is used for the control of penetration into the base material

A

Voltage

B

Welding speed

C Iron powder in the coating D 8

Current WHAT TYPE OF POWER SOURCE CHARECTISTIC IS REQUIRED FOR MANUEL WELDING

A

Constant voltage

B

Flat charectristic

C Drooping charesterstic D

Motor generator

Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No.

QUESTION In MAG/Co2 welding which parameters gives the greastest control of weld appearance during dip transfer or short circuting welding

9 A

Wire stic out length

B

Amperage

C Wire feed speed D

Inductance In MMA welding the slags produced can be variod to suit the welding position which type of slag would be required for welding in the HV poition

10 A

Fluid

B

Viscous

C None of the above D 11

Semi fluid A controlled heat input, Higher heeat input shows

A

Have poor profile

B

Have large grain size

C Have high hardness in the HAZ D 12

Have low elongation properties During Co2 welding the arc length is most likely to be affected by

A

The wire diameter

B

Torch to work angle

C Inductance D 13

Current return connection In friction welding is the metal at the interface in the

A

Liquid state

B

Siolid state

C Plastic state D

Elastic state Which one of the following type of steel would give rise to the formation of prosity when autogenously welded with an arc process

14 A

Fully killed steel

B

Semi killed steel

C Rimming steel D 15

Fine grained steel Submerged arc fluxes can be supplied in two forms, thees are

A

Sintered

B

Agitated

C Crushed D 16

Fussed and agglomerated Which one of the following process used the keyholing system of fusion

A

Friction welding

B

Diffusion bonding

C Electron beam welding Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No. D

QUESTION Autogenous TIG welding

Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No. 17

QUESTION In accordance with BS 499 what is the weld junction

A

The area containing HAZ and weld metal

B

The weld metal and parent metal

C The boundry between the fusion zone and HAZ D 18

The part of the weld which undergoes metallurgical change due to heat from welding Which of the following are essential factors for lamellar tearing

A

High residual stress,poor through thickness ductility existing plate lamination

B

Poor through thickness ductility, fusion face parallel with rolled direction of parent plate, most commonly occurs in butt welds

C Stress poor through thickness ductility,fusion face parallel with rolled direction of parent meterial D 19

Tensile stress,deoxidised parent plate, poor through thickness ductility In gas welding, leftward welding is described in BS 499 as

A B

The flame is directed towards the welded part and filler material is directed toward unwelded part of the joint The flame and filler mqaterial are both directed towards welded part of the joint

The flame is directed towards the unwelded part and the filler material is dierected towards welded part C of the joint D

The flame and filler mqaterial are both directed towards unwelded part of the joint Which of the following is not a fusion welding process

20 A

Thermit welding

B

Electro slag welding

C Laser welding D 21

Friction welding In submerged arc welding the use of the excessively high voltage would result in

A

Insufficiant flux melting

B

Excessive flux melting

C Slag removal difficulties D

Spatter Which one of the following destructive tests would indicate the toughness of weld metal

22 A

Macro

B

Nick break

C Hardness D

Charpy Vee notch

A

Name the fourth weld process crack which has a totally different formation mechanism to HICC, Solidification cracking and lamellar tearing Liquation cracking

B

Re heat cracking

23

C Crater cracking D

Hot tearing Planer defects are best described as

24 A

Linear from at least one direction

B

Round indications

C Linear from at least one direction with volum Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No. D

QUESTION May be classed as all of the above

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No.

QUESTION Which of the following welding process is not classed as an arc welding process

25 A

Electroslag welding

B

Thermit welding

C Plasma welding D

Both A and B

E

All of the above Which of the following material has poorest wekdability

26 A

Austenitic stainless steel

B

Martensitic stainless steel

C Carbon manganese steel D

HSLA steel Which of the following in a fusion weld usually has the highest tensile strength

27 A

Weld metal

B

Parent metal

C Heat affected zone D

Fusion zone Which of the following is a alternative name for a crater crack

28 A

Cold crack

B

Tearing

C Star crack D

Fatigue crack Which sub atomic particle has a positive charge

29 A

Proton

B

Photon

C Electron D

Neutron Which material is the most susceptible to re heat cracking

30 A

High carbon steels

B

Killed steels

C Creep resistance steels D

Austenitic steel Three essential factors for producing a fusion weld are ;Melting, the removal of surface oxide from the joint surfaces and elimination of atmosphere region of the arc Name the fourth

31 A

The weld must be free from stress

B

The filler metarial must match that of the weld

C The completed joint must at leased match the mechanical properties D

An arc for a heat source

Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No.

QUESTION Which are welding process /technique is likely to be uwed to repair localised porosity in a weld

32 A

MMA-PG position

B

Mechanical arc welding

C All of the above D

None of the above

E

Sub arc welding

33

Awelder qualified in the PG position would normally be qualified for welding A

All diameter of pipe

B

Welding postions PA, PC, PG and PF

C In postion PG only D 34

All pipe wall thickness Which of the following are considered to be heat affected zone cracks

A

Solidification cracks, Lamellar tearing and reheat cracks

B

Reheat crackes, liquation cracks and solidification cracks

C Hydrogen cracks, solidification cracks and liquation cracks D 35

Reheat crackes, liquation cracks and Hydrogen cracks Which of the following standard is entitled Visual Inspection of Fusion welded joints

A

BS 4515

B

BS 5289

C BS 5135 D 36

BS EN 440 In general it is not easy to mechanise the MMA welding process because

A

Short electrode lengths, the control of the arc length and the process uses a flat charecteristic

B

Short electrode lengths, the control of the arc length and flux covering

C The control of the arc length, stop start problems and short electrode lengths D 37

Flux coverings, short electrode lengths and the relationship between amps and volts Which of the following statements is true

A

Oxygen-fuel gas cutting is essentially an oxidation thermal cutting process

B

Oxygen-fuel gas cutting is essentially a melting process

C The only fuel gas is acetylene. D 38

Propane is the preffered fuel gas in oxygen-fuel gas cutting as it produce a hotter flame Which of the following best describes a semi- automatic welding process

A

The welder is responsible for the arc gap and travel speed

B

The welder is responsible for the arc gap and travel speed only

C The welding plant controls both travel speed and arc gap but under constent supervision D

The welding plant controls both travel speed and arc gap no supervision required In accordance with BS 5135 which of the following is applicable for scale C with regards to hydrogen content per 100g of deposited weld metal

39 A

> 15ml

B

>15 < 25ml

C >10 < 15ml Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No. D

QUESTION > 5 15ml per 100g of weld metal D deposited Which of the following could be used as stabilises in austenitic stainless steel B

99

A

Niobium and Nickel

B

Titanium and tungston

C Titanium and niobium D

Tungsten and nickel Basic coated electrodes have which of the following properties

100 A B

High mechanical properties, may be used to produce welds of high deposition rates and are designed to produce welds of low hydrogen content Friable slag highmechanical properties and are desighned to produce welds of low hydrogen content.

C Ease of use, good stop/start properties and high mechanical properties D

High mechanical properties, friable slag and to produce a weld of low carbon content

A

Which is the most likely appearance of lack of root fusion on a radiograph taken of a single vee butt weld A dark straight line with light roor

B

A dark straight line with dark roor

101

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No.

QUESTION

C A dark root with straight edges D

A dark uneven straight line with a light root Whaat is weld decay

102 A

Local reduction in chromium of metal under a constant stress at elevated tempratures

B

Slow plastic deformation of metal under a constant stress at elevated temprature

A type of crack which may occure in materials that are in a state of tensile stress and in contact with a C corrosive medium D A type of crack which may occure in the HAZ of the weld of low alloy steels during PWHT which of the following electrodes would you expect to have the highest elongation value

103 A

E51

B

E43

C E80 D

E90 Which of the following is applicable to electrode efficiency

104 A

The mass of metal deposited as a percentage of the mass of core wire melted

B

Iron powder electrodes have efficiences above 100%

C Electrode of high efficiencies tend to produce welds of smooth and flat profiles D

Both A and B

E

All of the above What would be the main effect produced by increasing the kV in radiography

105 A

An increase in sensityvity

B

An increase in definition

C A reduction in density D

A reduction in contrast When considering lamllar tearing, what is a buttering

106 A

A weld run used to increase the size of th throat thickness of the fillet weld

B

A weld run which may be used to take up contraction stress

C A weld run used to increase the UTS value of the parent material D

A weld run used to ensure full penetration of the fillet weld What factors are necessary for stress corrosion cracking to occure

107 A

An aggressive corrosive environment, a carbon content above 0.03% and residual stress

B

An aggressive corrosive environment, tensile stress and material susceptible to cracking

C A temprature above 0.5 of it's melting point,tensile stress and corrosive environment D

Poor through thickness ductility, a corrosive environment and a temprature of 0.5 of the materials melting point Which of the following constituents are added to electrode fluxes to aid arc stability

A

Aluminium oxide, manganese and silicon

B

Calciumcarbonate, potassium silicate and titanium oxide

108

C Thorium,cerium oxide and carbon dioxide D

Aluminium oxide, silicon and manganese Inn MMA welding what parameter is used for the controle of penetration into the base material

109 A

Voltage Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No. B

QUESTION Welding speed

C Iron powder in the coating D

Current

A

In the welding of a butt joint made from one side , which of the following controls the profile of the root bead Root face

B

Bevel angle

110

C Root gap D

None of the above What type of power source charectristic is required for manual welding

111 A

Constant voltage

B

Flat charectristic

C Drooping charesterstic D

Motor genarator Degreasing components are essential for quality welding but some agents may

112 A

Cause corrosion problems

B

Give off phosgens gas

C Leave residues D

All of the above

A

Which of the following chemical elements has the greater effect on the hardenability of a steel plate Molybdenum

B

Chromium

113

C Titanium D

Carbon Thee weld metal deposit of metal arc electrodes achive its mechanical strength through

114 A

The cor wire

B

The flux coating

C Iron powders with the flux coating In x-ray work the quality of the radiographic negative is assessed by the

115 A

Density of the film

B

IQI indicator

C KVA available D

Stand off distance A steel described as QT will have improved tensile properties because it has

116 A

Had control of chemical composition

B

Been heat treated

C Been quality tested D

Been vacuum melted

A

In the welding of austinitic stainless steels, the electrode and the plate material can be purchased with low carbon contents. The reason for this is to Cracking in the HAZ

117

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No. B

QUESTION The formation of chromium carbides

C Cracking in the weld metal D

Distortion

A

In a steel which has improved creep properties at elevated temprature, which one of the following elements helps in this improvement Tungston inclusion

B

Manganese

118

C Molybdenum D

Carbon Welding a steel plate of a CE of 0.45 would require preheating to

119 A

Prevent the formation of sulphides

B

Prevent hardening in the HAZ

C Prevent the formation of carbides D

To improve mechanical properties in the weld

A

Welding procedures may require welds to be deposited at a controlled rate heat input .High heat in puts would Have poor profile

B

Have larger grain size

120

C Have high hardness in the HAZ D

Have low elongation properties In a tensile test , a brittle material would be indicated if the fracture surface

121 A

Show a reduction in size

B

Is flat and featureless

C Breakes in the weld metal D

breaks in the parent material

A

What destructive test would be required to ascertain the liklihood of cracking in the HAZ of a weld Nick break

B

Side bend test

122

C Charpy impact D

Macro test Which type of submerged arc welding flux is more resistant to moisture

123 A

Fused

B

Agglomerated

C Basic D

All of the above Preheating for arc welding applies to

124 A

Assembly welding only

B

Assembly and tack welding

C Joints over 25 mm thick only D 125

Cruciform welds only Submerged arc welding is used to make butt welds which is the most critical parameter with respect to the weld preparation Mathew.N .Samuel

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MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No.

QUESTION

A

Root gap

B

Angle

C Root face D

Gas cut finish The presence of iron sulphide in weld metal is associated with

126 A

A solidification cracking

B

Hydrogen cracking

C Intergranular corrosion D

Stress corrosion A metallurgical problem most associated with arc welding is

127 A

Hydrogen cracking in the heat affected zone

B

Solidification cracks in weldmetal

C Hydrogen cracking in the weld metal D

Lamellar tearing in the weld metal In submerged arc welding, excessive arc voltage may cause

128 A

Excessive penetration

B

Change in weld metal composition

C Narrow weld width D

Excessive weld bead height A large grain structure in steels is said to produce

129 A

Low ductility value

B

Low fracure toughness value

C High fracure toughness value D

High tensile strength The liklehood of brittle fracture in steel increase with

130 A

A large grain formation

B

A reduction of in service temparature to sub zero levels

C Ferritic rather than austenitic steel D

All of the above Lamellar tearing has occurred in a steel fabrication before welding could it have been found by

131 A

X-ray examination

B

Dye penetrant test

C Ultrsonic inspection D

It would not have been found by any inspection method

A

Austenitic stainless steel electrodes and plate with loww carbon contents are used to minimise the risk of Cracking in the HAZ

B

The formation of chromium carbides

132

C Cracking the weld metal D 133

Distortion Improper flame cut preparations may, during welding increase the liklihood of Mathew.N .Samuel

Page 22 of 46

MULTIPLE CHOICE QUESTION & ANSWER WELDING - CSWIP-3.1 Q.No.

QUESTION

A

Cracking

B

Misalignment problems

C Inclusions D

All of the above Cracks in welds may be due to

134 A

Solidification problems

B

Hydrogen problems

C Excessive stresses D

All of the above Hydrogen cracking in the weld metal is more likely when welding

135 A

Carbon manganese steel

B

Stainless steel

C Micro alloyed steel D

Low carbon steels In flame cutting , oxy pressure and nozzle size would influence

136 A

The temprature required for cut initiation

B

The ablity to cut stainless steels

C The depth of cut obtainable D

None of the above Pre heating a carbon steel before welding is carried out to minimise the risk of

137 A

Scattered porosity

B

Excessive destortion

C Parent metal cracking D

Lack of pentration

Mathew.N .Samuel

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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CHOICE QUESTION & ANSWER Answer

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ANSWER SHEET FOR WELDING INSPECTOR Q.No. Answer Q.No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

A,B B C B C C D C D B B D C C D C C C D D B D B A D B C C A C C D C D B C A A D A C A A

44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

Answer B D B C A D C B D A D B C A A B C D C D B B A B B A C B A B A A B A D A B D C C A A B

Q.No. 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130

Answer B C A C C B C C C D C C A A A B E C B B B D C C D D B B B B C B B B D A B A A B B B D

file:///var/www/apps/conversion/tmp/scratch_2/259461050.xls

Q.No. 132 133 134 135 136 137

Answer B D D C C C

Mathew .N.Samuel

ANSWER SHEET FOR WELDING INSPECTOR Q.No. Answer Q.No. 87

Answer B

Q.No. 131

Answer

Q.No.

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Answer

D

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