api 5l ques (2)

WELSPUNGUJARAT STAHL ROHREN LTD.

ANJAR-GUJARAT (INDIA)

QUESTIONAIRES ON API 5L 44TH EDITION

NO.: WGSRL/API-5L/API/QUES. /01 REV.NO.: 0DATE : 05.01.2009PAGE NO.: 1 OF 33

QUESTIONNAIRES ON API 5L 44th EDITION

PART – A (NON-DESTRUCTIVE TESTING)





1. As per API 5L 44th edition, which of the following NDE is not mandatorya) Radiography Testingb) Seam Ultrasonicc) Lamination Testing d) Non of the above

Q. 2. Which of the following indication are not acceptable regardless of length?

a) Slagb) Porosityc) Lock of fusiond) All of above

Q. 3. What is the maximum permissible size of single rounded indication?a) 3.2 mmb) 6.4 mmc) 3.25 mm d) 13 mm

Q. 4. What is the maximum permissible length of a linear indication? a) 12.7 mmb) 13 mm c) 6.5 mm

d) Non of the above

Q. 5. As per API 5L 44th edition maximum permissible residual limit is a) 20 gauss average b) 25 gauss averagec) 30 gauss averaged) 10 gauss average

Q. 6. What is acceptance limit in seam ultrasonic testing? a) Any indication below threshold are accepted

b) Any indication above threshold are acceptedc) Both of above d) Non of the above

Q. 7. As per API 5L 44th edition what should be notch dimensions for SAW pipesa) Depth – 5% of WT, 1” length b) Depth-10% of WT, 2” Length





c) Depth-10% of WT, 1” Lengthd) Depth- 3% of WT, 2” Length

Q. 8. NDT personnel qualification should be as pera) Level - II b) SNT-TC-1A or ISO 11484c) ASTMd) API

Q. 9. For SAW pipes, the weld at each pipe end for a minimum distance shall be inspected by radiography testing is

a) 300 mm b) 203 mm c) Not specified d) 500 mm

Q. 10 What should be calibration frequency for Seam UT machine a) Once in a dayb) Once in every shiftc) Twice per operating shift d) Not specified

Q. 11 For film radiography an IQI should appear ina) Per 50 exposure b) Each exposurec) Per 10 exposure d) 10 of exposed film

Q. 12 what type of IQI can be used for radiography testinga) ISO b) ASTMc) APId) ISO/ASTM

Q. 13 As per API 5L 44th edition what should be minimum density for radiographs

a) 1.8b) 2.0c) 1.5d) 4.0





PART – B ( DESTRUCTIVE TESTING)

1) As per API 5L the gauge length for Strip Specimen of tensile test is?

a) 49.60mm b) 49.80mmc) 50.00mmd) 50.80mm

2) While doing tensile test, lower jaw of machine remains?

a) Fixed b) Unfixedc) Middled) None of these





3) For macro specimen, the ratio of etchant shall be?

a) 3:1 b) 1:3c) 1:2d) 2:1

4) For macro examination the etchant contains the mixture of?

a) Nitric Acid + hydrochloric Acidb) Methanol + Nitric Acidc) Nitric Acid + Waterd) None of these

5) What is the purpose of macro examination is to find out?

a) Bead off b) Width penetration & depth penetrationc) Heat input in welding processd) All

6) Purpose of doing tensile test is to find out the?

a) Toughnessb) Strength & ductilityc) Hardnessd) None of these

7) HV 10 stands for?

a) Hardness value 10 kgb) High value of 10 kgc) Hardness Vickers 10 kgd) Hardness value 10 g

8) Indentor used in Vicker Hardness is?

a) Graphiteb) Diamondc) Balld) None of these

9) In tensile test, the graph is drawn between?

a) Load V/S Displacement





b) Stress V/S Loadc) Displacement V/S Loadd) None of these

10) Width and Thickness of the Strip Specimen for tensile test is known from?

a) ASTMb) API 5Lc) Bothd) None of these

11) DWTT stands for_______?

a) Drop Weight Tensile Testb) Drop Weight Tear Testc) Drop Weight Time Testd) None of these

12) The press notch of DWTT Specimen is of?

a) 1 mmb) 2 mmc) 5 mmd) 4 mm

13) Notch of DWTT is made for?

a) Stress concentrationb) Strain concentrationc) Pressured) None of these

14) The shape of notch in charpy impact specimen is?

a) V notchb) W notchc) X notchd) None of these

15) Charpy Impact test is done for?

a) Hardnessb) Strengthc) Toughnessd) Ductility





16) Impact reading obtained from existing Charpy machine is in?

a) Kilo Jouleb) Kilogramc) Jouled) Gram

17) In hardness, the value should be more in?

a) Baseb) Weldc) HAZd) All

18) Purpose of Transition Curve in DWTT is to find out?

a) Shear Areab) Strengthc) Nil Ductilityd) All

19) As per API 5L the soaking time for impact test is?

a) 2 min.b) 5 min.c) 10 min.d) 15 min.

20) The formula for % shear area in DWTT is_______?

a) ( 71 – 2t ) x t -3/4 AB x 100 --------------------------

(71 -2t) x t

b) ( 71 – 2t ) -3/4 AB x 100 --------------------------

(71 -2t)

c) ( 71 – 2t ) x t -3/4 A x 100 --------------------------

(71 -2t) x t

d) None of these.

21) From above question, what is?





a) A is ______b) B is ______c) T is ______

22) As per API 5L the soaking time for DWTT of 9.80mm thk specimens is

a) 5 Min.b) 10 Min.c) 15 Min.d) 20 Min

23) The dwelling time for Vickers Hardness test machine is

a) 15 Secb) 10 Secc) 12 Secd) 20 Sec

24) Which machine is used for Tensile and Guided bend tests?

a) Universal Testing Machineb) Vickers Hardness Machinec) Bothd) None of the Above

25) In Impact/DWTT test, the temperature is checked by

a) Thermocoupleb) Thermostatc) Thermometerd) None of the above

26) Which belong to sub-size specimen of Impact test as per ASTM A 370.

a) 6.7, 7.5 mmb) 6.2, 7.3 mmc) 6.0, 7.0 mmd) None of the above.

27) In tensile test the Yield Strength is calculated using

a) Vernier Caliperb) Extenso meterc) Bothd) None of the above.





28) In Impact test the absorbed energy follows the criteria

a) Base>HAZ>Weldb) Weld >HAZ>Basec) HAZ>Base>Weld.d) None of the above.

29) Higher the strength lower will be

a) Hardnessb) Toughnessc) Ductilityd) None of the above.

30) The Metallurgical Microscope is used to measure

a) Hardnessb) Toughnessc) Grain Size & Structured) None of the above.

31) Brittle fracture is the next stage of

a) Cleavageb) Ductilec) Bothd) None of the above.

32) In Tensile test the radius of standard strip specimen is

a) 1”b) 2”c) 3”d) 4”

33) In Impact test, the notch angle of the specimen

a) 300

b) 350

c) 400

d) 450

34) In Tensile test the gauge length is measured using

a) Extenso meterb) Vernier Caliper





c) Bothd) None of the above.

35) Profile Projector is used to check

a) Depth of the notchb) Width of the notchc) Angle of the notchd) All of the above

36) In Impact test, pendulum strikes the specimen in

a) Clockwiseb) Anticlockwisec) Bothd) None of the above

37) In Impact test full size specimen dimensions(in mm) are

a) 10X10X55b) 20X10X55c) 15X20X55d) None of the above

38) In Tensile Test, TBT stands for

a) Tensile Base Transverseb) Transverse Base Tensilec) Tensile Base Tensiled) None of the above

39) In Tensile Test, TWT stands for a) Tensile Weld Transverseb) Transverse Weld Tensilec) Tensile Weld Tensiled) None of the above

40) In DWTT, the load is applied to the specimen from a) Topb) Bottomc) Side Waysd) None of the above





41) As per API Specification, for DWTT each heat should havea) 1 Specimenb) 2 Specimenc) 3 Specimend) 4 Specimen

42) The ASTM grain size no is calculated from a) N = 2n-1

b) N = 2n+2

c) N = 2n+1

d) None of the above.

43) In Impact testing, the samples are taken in which directiona) Transverse Directionb) Longitudinal Directionc) Along forming direction d) None of the above

44) The angle in Guided Bend Test is,

a) 1800

b) 1200

c) 1000

d) 900

45) In Impact test as per API 5L Notch orientation should be

a) Through the thicknessb) Through the widthc) Through the lengthd) None of the above.





PART – C ( HYDRO TESTER & FINISHING )

Q:1 SMYS isAnswer: A. Specified maximum yield strength

B. Specified minimum yield strengthC. Special minimum yield stressD. all above

Q:2 Equation for determining the hydrostatic test pressure isAnswer: A. P = 2St/D

B. P = 2SD/tC. P = 2Dt/SD. P = 2Sd/t

(D= Ourter Diameter, d=Inner Diameter, t=Wall Thickness, S=Hoop Stress)Q:3 WHICH IS THE LIMITATION OF HYDROTESTING TO BE DETECT?Answer: A Internal cracks

B Slag , LOP, LOFC PorocityD all above

Q:4 The callibration frequency of Pressure gauge isAnswer: A. weekly

B. fortnightlyC. Ten daysD. Monthly





Q:5 WHICH IS CALLED VISUAL DEFECT?Answer: A Under cut

B. Surface DefectsC Poor Weld & PorosityD all above

Q:6 Which oil isn't mixed with water?Answer: A wedolit oil

B hydrolic oilC cutting oilD all above

Q:7 End Diameter difference acceptableAnswer: A . 1 mm

B. 1.4 mmC . 2 mmD 2.4 mm

Q:8 What parameters are shown on Chart Recorder Graph?Answer: A. Pressure & Weight

B. Weight & TimeC. Pressure & TimeD. none of above

Q:9 What is the Testing Pressure & Holding Time for 30"x9.8mmwt X-70 GRADE ?Answer: A. 1710 PSI & 10 sec.

B 1610 PSI & 10 sec.C. 1810 PSI & 15 sec.D. none of above

Q:10 % of Emulsion Oil concentration required in hydro tester pit water isAnswer: A. 1%

B. 1.5%C. 2%D. none of above

Q:11 Pi-tap is used forAnswer: A. measuring wall thickness

B. measuring length C. measuring Outside DiameterD. measuring Ovality

Q:12 As per API 5L, 44th Edition; End diameter for 30" pipe isAnswer: A. , + 1.6 mm & - 1.6 mm

B. , + 1.6 mm & - 0.8 mmC , + 0.8 mm & - 2.4 mmD. , + 2.4 mm & - 0.8 mm

Q:13 As per API 5L, 44th Edition; Body diameter for 40" pipe isAnswer: A. , + 3.0 mm & - 3.0 mm

B. , + 4.0 mm & - 4.0 mmC. + 3.2 mm & - 4.0 mmD. + 4.0 mm & - 3.2 mm

Q:14 What is the Root Face required as per API 44th Edition?

Answer: A 0.8 to 2.4 MM





B 0.6 to 1.8 MMC 0.8 to 1.6 MMD none of above

Q:15 What is the Squareness required as per API 44th Edition ?

Answer: A 1.6 MMB 0.6 MMC 1.8 MMD none of above

Q:16WHICH DEFECT CANNOT BE DETECTED BY RADIOGRAPHY?

Answer: A LaminationB Lack of FusionC Slag inclusionD Longitudinal Crack

Q:17 What is the Bevel Angle Parameters as per API?

Answer: A 30° to 35° B 30° to 32° C 28° to 35° D none of above

Q:18 Which Insert is used for Bevelling in Spiral-2 plant?

Answer: A TNMMB TGMGC TNMGD none of above

Q:19 Which Insert is used for Facing in Spiral-2 plant?

Answer: A TNMMB TGMGC TNMGD none of above

Q.20 "T" means in Insert TNMG 3309

Answer: A TriangularB Nose radiusC TrapezoidalD Thickness

Q.21 Cutting speed of 30" OD pipe at 45 rpm is





Answer: A 107.6 mtr/minB 207.6 mtr/minC 97.6 mtr/minD 157.6 mtr/min

Q:22Straightness required as per API 5L 44th Edition for entire Pipe Length is

Answer: A 0.15%B 0.20%C 0.10%D none of above

Q:23 Which instrument to be used for measuring bevel angle

Answer: A Vernier caliperB Bevel protectorC MicrometerD none of above

Q:24 Pi-tap is used for

Answer: A measuring wall thicknessB measuring length C measuring Outside DiameterD measuring Ovality

Q:25If Pipe is not centered in beveling machine than what will happen

Answer: A Uneven root faceB Uneven Bevel angleC Squareness beyond limitD measuring Ovality

Q:26 Cutting Speed equation (meter/min.)

Answer: A pi X D / N X 1000 D = DiameterB pi X D / N X 100 N = rpmC pi X D / N D none of above

Q:27 The cause of chattering is

Answer: A diameter more or lessB clamping not properC pipeisnot in centreD insert damage





Q:28 Burr appears when,

Answer: A Less tension of follower roller on pipeB follower roller looseC insert damageD more Oval pipe





PART – D ( FORMING )

1 WHICH PARAMETER REQUIRED FOR HELIX ANGLE CALCULATION

A) COIL WIDTH B)PLATE THICKNESS

C)DIA OF PIPE D)ALL

2 PIPE DIA= 762MM, PLATE WIDTH=1490MM, WHAT IS SIN ANGLE(HELIX)

A)31.5 C)42

B)38.5 D)35.5

3 IDENTIFY EDGE MILLING BEVEL ANGLE

A)45° B)40°

C)65° D)15°

4 THE DISTANCE BETWEEN TWO SEAMS IN SPIRAL PIPE CALLED AS

A) PITCH B)HELIX ANGLE

C)DIAMETER D)WELD LENGTH





5 HOW TO SEGREGATE THE COIL

A) BY WIDTH B)BY WEIGHT

C)BY THICKNESS D)BY COIL NUMBER

6 IN WELDING PROCESS WIRE SPEED IS DIRECTLY PROPORTIONAL TO--

A) CURRENT B)VOLTAGE

C)STICK OUT D)FLUX

7 IDENTIFY THE WELD WIRE GRADE FOR "SAW"

A)ER70S1 B)ERSO76

C)EM12K D)ERS017

8 WHISH TYPE OF WELD GEOMETRY REQUIRED FOR AUTO "GMAW"

A)SQARE BUTT B)SINGLE "V"BUTT JOINT

C)DOUBLE"V"BUTT JOINT D)NONE

9 FUNCTION OF COIL CAR

A) TO LIFT THE COIL B)TO ROTATE THE COIL

C)BOTH A&B D)NONE

10 WHAT IS THE GAS MIXING RATIO IN AUTO GMAW

A)CO2-80%,AR-20% B)CO2-60%,AR-40%

C)CO2-70%,AR-20% D)CO2-50%,AR-50%

11 WHAT IS THE MAX COIL WIDTH CAN RUN IN SPIRAL-2 PLANT

A)25OOMM B)2200MM

C)2800MM D)3000MM

12 TOTAL NUMBER OF TOOLS REQUIRED IN BEVEL CUTTER

A)16 B)48

C)24 D)40

13 TOTAL NUMBER OF TOOLS REQUIRED FOR FACING CUTTER

A)10 B)30

C)40 D)50





15 MAX WELDING SPEED POSSIBLE FOR "ISAM" WELDING SYSTEM GERMANY

A)5MTRS/MIN B)6MTR/MIN

C)10MTRS/MIN D)8MTRS/MIN

16 PIPE DIA= 762MM, PLATE WIDTH=1490MM, WHAT IS PITCH

A)1902MM B)1702MM

C)1802MM D)1578MM

17 WHAT IS THE CAPACITY OF DECOILER

A)10TON B)40TON

C)30TON D)20TON

18 WHICH TYPE OF GASES ARE USED IN AUTO GMAW

A)CO2 B)ARGON

C)BOTH ARGON&CO2 D)NONE

19 WHAT IS THE CONSUMABLES REQUIRED FOR PERFECT ALIGNMENT IN PLASMA TORCH BODY

A) ELECTRODE B)NOZZLE

C)SWIRL RING&RETAINING CAP D)ALL

20 IDENTIFY THE DIAMETER OF FILLER WIRE IN AUTO GMAW(PRESENT RUNNING)

A)2.5MM B)3.15MM

C)4.0MM D)1.2MM

21 WHAT IS THE FULL FORM OF API?

A) AFRICAN PETROLEUM

INSTITUTE B)AMERICAN PIPELINE INSTITUTE

C)AMERICAN PETROLEUM

INSTITUTE D)AFRICAN PIPELINE INSTITUTE

22WHAT IS THE FULL FORM OF

WPS?

A) WELDING PROPERTIES

B)WELDING PROCEDURE

SPECIFICATION

C)WELDING PROCEDURE D)WELDING PROPERTIES





STANDARD SPECIFICATION


WPQ?

A) WELDER PROCEDURE QUALIFICATION

B)WELDING PROCEDURE

QUALIFICATION

C)WELDER PERFORMANCE QUALIFICATION

D)WELDING PERFORMANCE

QUALIFICATION

24 WHAT IS FLY CROSS SEAM WELDER TROLLEY TRAVELING DISTANCE

A)35 B)40

C)45 D)50

25 WHAT IS THE IMPORTANT EFFECT OF CURRENT IN SAW

A)BURN THROUGH B)BEAD HEIGHT

C)BEAD WIDTH D)ALL THE ABOVE

26WHAT ARE THE VARIABLES IN

SAW?

A) CURRENT B)VOLTAGE

C)WELDING SPEED D)ALL THE ABOVE

27 WHICH TYPE OF POWER SOURS ARE USED IN X-SEAM WELDER

A)AC-AC B)DC-DC

C)AC-DC D)NONE

28 IDENTIFY THE WELD WIRE GRADE FOR "GMAW"

A)ER70S1 B)ERSO76

C)EM12K D)ERS017

29 WHICH STICK OUT RANGE IS SUITABLE FOR "GMAW"

A)10-15MM B)5-10MM

C)20-30MM C)70-80MM


GMAW





A) GAS METAL ARC WELDING B)GOUGING METAL ARC WELDING

C)GAS MANUAL ARC WELDING B)GOUGING MANUAL ARC WELDING

PART – E ( WELDING )

1. What is the full form of GMAW Process?a) Gas metal arc welding b) Gouging metal arc weldingc) Gas manual arc welding





d) Gouging manual arc welding

2. Which filler wire is used in TACK Repair Station in our plant? a) EM12K b) ER70S6c) LNS140TBd) ER70S2

3. Which type of Gas used in GMAW manual welding in our plant?a) Co2b) Co2 & LPGc) Ard) O2

4. What is the diameter of the electrode used in TACK Repair in our plant?a) 3.15 mmb) 1.2 mmc) 4 mmd) 3.2 mm

5. Which polarity used in co2 welding in our plant?a) DCENb) DCEPc) DCPNd) DCPE

6. What is the allowable offset as per API 5L?a) < 2.5 mmb) < 1.6 mmc) < 3.5 mmd) < 4.0 mm

7. Which type of defects visually found in TACK Repair station in our plant?a) LOFb) Porosityc) Crackd) LOP

8. What is the validation period for welder as per standard?a) 6 monthb) 1 year c) 2 yeard) 3 month

9. When voltage increases in Co2 welding,





a) Wire feed speed decreases b) Current decreasesc) Current increasesd) None

10. What is the dimension of Tab used for Tab joint?a) 350x150 b) 450x250c) 400x200d) 300x100

11. What type of metal transfer carried out in Co2 welding in our plant?a) Short circuiting metal transferb) Globular metal transferc) Spray type metal transferd) Pulsed arc metal transfer

12. In electrode designation ER70S6, 70 denote?a) 70,000 psi tensile strengthb) 70 psi tensile strengthc) 70,000 psi yield strengthd) 70 psi yield strength

13. What is the full form of PQR?a) Procedure qualification reportb) Properties qualification recordc) Procedure qualification recordd) Properties qualification report

14. What is the full form of WPS?a) Welding propertiesb) Welding procedure specificationc) Welding procedure standardd) Welding properties specification

15. Which type of grinding wheel is used for cutting?a) 5 mm thicknessb) 7 mm thicknessc) 3 mm thicknessd) All the above

16. What is the use of tab joining?a) To control weld quality at both end of pipe b) To hold the pipe in machinec) All the aboved) None





17. What is the % of gas mixture used in TACK repair station?a) 80% Co2 & 20% Ar b) 100% Co2c) 100% Ard) 20% Co2 & 80% Ar

18. What is the flow rate of gas used in TACK repair station?a) 20-30 lpm Co2b) 10-20 lpm Co2c) 20-30 lpm Co2 & Ard) 10-20 lpm Co2 & Ar

19. In electrode designation ER70S6, 6 denote?a) Tensile strengthb) Yield strengthc) Chemical compositiond) none

20. What is the AWS specification for GMAW filler wire?a) SFA 5.18b) SFA 5.23c) SFA 5.17d) SFA 5.10

21. What is the position of welding in TACK repair station?a) 1Gb) 6Gc) 3Gd) 2G

22. What are all the consumable in manual GMAW?a) Gas b) Filler wire c) All the above d) None

23. What is the defect faced in TACK repair from forming section?a) LOFb) Slag c) Porosity d) All the above





24. What is importance of cleaning in TACK repair station?a) To avoid grease in grooveb) To avoid mill slag c) To remove scales in the surface d) All the above

25. What are all the important safety items related to welding?a) Shielding b) Gloves c) Arm & leg guard d) All the above

26. Co2 welding is under which type in our plant?a) Automatic welding b) Semi automatic welding c) Mechanized welding d) Manual welding

27. What is the full form of WPQ?a) Welder procedure qualificationb) Welding procedure qualificationc) Welder performance qualificationd) Welder procedure qualification

QUESTION PAPER FOR SAW PROCESS





1. What is the full form of SAW Process?a) Shielded arc welding b) Submerged arc weldingc) Solid arc weldingd) Submerged argon welding

2. Which filler wire is used in SAW process in running order?a) EM12K b) ER70S6c) LNS140TBd) EM12K & LNS140TB

3. What are all the consumables in SAW process?a) Filler wireb) Gasc) Fluxd) Filler wire & Flux

4. The lead wire dia is generally,a) Smaller than trail wireb) Bigger than trail wirec) None of the above d) Same

5. The DCEP polarity gives,a) More deposition of weldb) More penetration c) Higher speedd) All the above

6. What is the important function of flux in SAW?a) Add alloying elements in weldb) Protect the arc from atmospherec) Allow the gases to escaped) Stabilize the arc

7. What is the minimum preheating temperature flux?a) 50°cb) 60°cc) 70°cd) 80°c

8. What is the full form of WPS?a) Welding propertiesb) Welding procedure specification





c) Welding procedure standardd) Welding properties specification

9. What is the advantage of SAW over SMAW?a) For high productionb) For smooth weld beadc) For deep penetrationd) All the above

10. What is the important feature available in SAW in our plant?a) Video systemb) Laser tracking systemc) Power wave power source systemd) All the above

11. What is the function of DC electrode in SAW in our plant?a) For deep penetrationb) For wider beadc) For narrow beadd) All the above

12. What is the trail wire and its polarity in SAW existing order?a) LNS140TB & ACb) EM12K & ACc) EM12K & DCEPd) LNS140TB & DCEN

13. What is the maximum bead height allowed as per API specification?a) 4.0 mmb) 3.2 mmc) 3.8 mmd) 3.5 mm

14. In electrode designation EM12K, 12 denote?a) .12% manganeseb) .12% carbonc) Tensile strengthd) Yield strength

15. What will be effect of voltage in weld quality, when it increases?a) Penetration less b) Narrow beadc) Penetration mored) Undercut

16. What are all the variables in SAW?a) Current & voltage





b) Stick out c) Welding speed d) All the above

17. What is the important effect of current in SAW?a) Burn throughb) Bead heightc) Bead width d) All the above

18. What is the important effect of voltage in SAW ?a) Burn throughb) Bead sizec) Under filld) Under cut

19. What is the stick out distance generally used for pipe welding?a) 35 mmb) 26 mm c) 15 mm d) 45 mm

20. What is the wire spacing used in tandem welding?a) 18 mmb) 25 mmc) 28 mmd) 30 mm

21. What is the full form of WPQ?a) Welder procedure qualificationb) Welding procedure qualificationc) Welder performance qualificationd) Welder procedure qualification

22. In electrode designation EM12K, M denote?a) Mn contentb) Mg contentc) Tensile strengthd) Yield strength

23. What is filler wire specification for SAW?a) SFA 5.18b) SFA 5.20c) SFA 5.17d) SFA 5.10

24. Higher amount of finer flux leads to,





a) Cracks in weldb) Porosity in weldc) Less penetrationd) More deposition

25. Under cut in SAW are mainly due to,a) Lower welding speedb) Lower voltage c) Higher stick out d) None of the above

26. Minimum overlap of ID & OD weld should be,a) 0.5 mmb) 1.0 mmc) 3.0 mmd) None of the above

27. What is the function of AC electrode in SAW?a) For penetrationb) For depositionc) To prevent arc blowd) All the above

28. Tabs at pipe each ends are welded to get,a) Defects free weld at endsb) Stabilization of weld parametersc) Tracking of weld seamd) None


30. What is the function of cyclone separator in flux recovery system?a) To filter the fine flux particles b) For recovery of fluxc) To filter the coarse flux particles d) All the above





QUESTION PAPER FOR SMAW PROCESS

1. What is the full form of SMAW Process?a) Shielded manual arc welding b) Submerged metal arc weldingc) Solid metal arc weldingd) Shielded metal arc welding

2. What is the Electrode used in SMAW process in our plant?a) EM12K b) ER70S6c) E8018Gd) LNS140TB

3. Which position used for SMAW in our plant?a) 1Gb) 2Gc) 5Gd) 4G

4. Which type of electrode used in SMAW in our plant?a) Rutile electrodeb) Cellosic coatedc) Basic coatedd) Low hydrogen Iron powder coated

5. What is the important application of SMAW?a) Repair weldingb) Less costc) Portable d) Less time

6. In electrode E8018G, 80 denotes? a) Position b) Chemical compositionc) Tensile strengthd) Yield strength

7. What is the maximum single repair length allowable as per API ?a) 150 mmb) 228 mmc) 300 mmd) 350 mm





8. Before starting the SMAW, the electrode preheating temperature is?a) 350 º cb) 0 º cc) 410 º cd) 250 º c

9. What type of technique used in SMAW in our plant?a) Stringerb) Weaver c) Both stringer & weaverd) none

10. What is the length of electrode used in SMAW?a) 250 mmb) 550 mmc) 450 mmd) 150 mm

11. What is the important function of electrode coating?a) Arc stabilityb) Shielding the arc from the atmospherec) Improves mechanical propertiesd) All the above

12. The intermittent cleaning of weld is due to,a) Achieve good weld shapeb) Achieve good weld shiningc) Avoid slag inclusion weldd) Good penetration

13. What is another name for SMAW?a) Manual metal arc weldingb) Solid metal arc weldingc) Flux core metal arc weldingd) arc welding

14. What is the full form of WPS?a) Welding propertiesb) Welding procedure specificationc) Welding procedure standardd) Welding properties specification

15. What is the name of the document to qualify the welder?a) Welding procedure specificationb) Welder performance qualification





c) Procedure qualification testd) none

16. What is the minimum repair depth as per API 5L?a) 1/3 rd of wall thicknessb) 3.5 mmc) 2/3 rd of wall thickness d) 2.5 mm

17. What type of NDT method used in X ray repair station ?a) Ultrasonic testingb) Radiography testingc) Dye penetrant testingd) Magnetic particle testing

18. What type of arc striking used in our X ray repair station ?a) Hitting methodb) Scratching methodc) All the aboved) none

19. What is the function of Dye penetrant test?a) To detect the surface defectb) To detect the sub surface defectc) To detect the internal defectd) All the above

20. What is the minimum length of repair as per API?a) 75.5 mmb) 50.8 mm c) 65.6 mmd) None


22. In electrode designation E9018G, 1 denotes?a) Tensile strengthb) Position c) Chemical composition d) Yield strength

23. What will be effect of current, when it increases?a) Penetration less b) Narrow beadc) Heat input mored) Under fill





24. What is the polarity used in X ray repair station in our plant?a) DCENb) DCEPc) DCPEd) None

25. What is the advantage of DCEN polarity?a) For good depositionb) For narrow bead c) For deep penetrationd) All the above

26. What is the power source used in SMAW in our plant?a) ACb) DCc) Power wave power source systemd) All the above

27. What are all the important safety items required in SMAW?a) Shielding glass b) Nose mask c) Hand gloves d) All the above

28. What is the method used to prevent hydrogen cracking in SMAW?a) Gouging b) Preheating c) Grinding d) Cleaning

29. What standard we are following for acceptance criteria?a) API & customer specificationb) ASME & customer specificationc) BSd) Customer specification

30. What is the defect visually found in X ray repair station?a) Slag b) Under cut c) LOP d) LOF

api 5l ques (2)

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