Q:- When welding 28 mm thick carbon steel with GMAW ,what type of shielding gas would not normally used.

1) 25 % CO2 in Argon

2) CO2

3) Argon

4) 5% CO2 in Argon

Q:- Which of the following is not the reason for the increase of HAZ cracking when welding carbon manganese steels:

A). Fast cooling after welding
B). High manganese content
C). High carbon content
D). None of the above

Q:- Steels that have intentional addition of sulphur , lead or selenium to improve machinability :

A) Are used for truck axles only
B) Can not be welded
C) Can develop liquation crack in the HAZ after welding
D) Do not require approved procedures to be welded 

Q:- Which of the welding process used loose granular flux:

A. FCAW

B. SAW

C. GTAW

D. SMAW

Q:- Which of the welding process used loose granular flux:

A. FCAW

B. SAW

C. GTAW

D. SMAW

Q:- Increasing the carbon content of steel allows a given level of hardness to be achieved :

A . at a higher cooling rate
B . without consideration of the cooling rate
C. without adding chromium to the steel
D. At lower cooling rate

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Q:- Which is an advantage of an argon/hydrogen gas mixture in TIG of stainless steel

A. Lower heat input

B . Improved toughness

C. Faster travel speed

D. Improved mechanical properties

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Q:- Sulphur is sometimes added to steel to improve:

A . The impact properties of the welded joint

B . Provide higher impurities levels

C. Toughness of the parent materials

D. Machining properties characteristics of the steel

Q:- which is conjunction with wps?

(A). PWPS
(B). WPQR

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Course Description: 

-Welding Inspection Technology Workshop - 3 DAYS
-Visual Inspection Workshop( 1.5 Day)
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Course Benefits:

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Start Date: February 22, 2016
End Date: February 28, 2016

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Contact us by email or phone about the course. Puneet Sharma Email id: aws.cwi.training@gmail.com +91-8196980555

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Q:- As per ISO 12637.?

(A). Visual inspection for mpi & dpi

(B). Minimum 10× 300 and required 500 lux

(C). Minimum 500 lux

(D). A & B both

Q:- When MIG/MAG welding wire feed speed is proportional to

A. Travel speed

B. Welding current

C . Arc length

D. Inductance

Q.generally the most suitable method of detecting lack of side wall fusion on z single v butt weld (35° to 35° bevel angle) would be?

1). UT

2). RT

3). MPI

4). Both A&B

5). All of the above

Q:- Can plate lamination be found using visual inspection method?

A. only in austenitic stainless steel
B. yes with the right lighting condition on the plate face
C. only in the unrolled condition
D. only when viewed in cross section

Q:- Which of the following MMA electrode type is generally only suitable for welding in the PA and PB POSITIONS?

A. Basic

B. Cellulosic

C. Rutile

D. Iron powder

Q:- Shrinkage stresses are greater when welding metals that have

1. A high coefficient of thermal expansion

2. No restraint

3. A low coefficient of expansion

4. A high melting point

Q:- What does the term high frequency mean when referring to?

A. A high integrity weld is easily achievable

B. The power source gives a high duty cycles

C. A high voltage spark is used to initiate the arc

D. The output from the power source is high

Q:- n general thicker materials required higher pre heat temperatures, but for a given CEV and arc energy heat input, they are likely to remain similar for wall thicknesses up to approximately

A. 10mm

B. 20mm

C. 40mm

Q:- GMAW, MIG/MAG welding which mode of metal transfer uses frequencies in cycle time

A. spray transfer
B. pulse transfer
C. dip transfer
D. globular transfer

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Q:- What may be reason for using Nitrogen gases in TIG welding?

A. To stabilize the arc when welding carbon steel
B. It can be used to weld copper
C. The gas used is always choose of the welder
D. It is very best gas to nickel alloy

Q:- hat is mean by terms of duty cycle?

A. How long a welder can weld in given period

B. The amount of time the electrode being is used.

C. The amount of time welding machine can be used.

D. The amount electricity being consumed

Q:- Which of the following material is most susceptible to hydrogen cracking?

A. Low carbon steel
B. Austenitic stainless steel
C. High strength low alloy steel
D. Aluminum

Q:- Which of the following is normally true?

A. Impact energy is specified in N/mm2

B. Heat input is specified in KI/mm2

C. Yield strength specified in N/mm2

D. Diffusible hydrogen in ml

Q:- Then comparing properties of plain carbon steel and authentic stainless steel following measurements true?

A. Carbon steel have better thermal conductivity

B. Stainless steel have low expansion and contraction

C. Carbon steel have higher expansion rate in the Z direction

D. Stainless steel have lowest chromium

Q:- Cast and helix are terms that refer to :

A. Ingredients in the flux covering
B. Bead deposition techniques for distortion control
C. Quality of the welding wires
D. Sources from which wires are drawn

Q:- Carbon di oxide shielding is NOT suitable for MAG Welding of Austenitic stainless steel

A. Carbon di oxide is heavier gas
B. Carbon di oxide is an active gas
C. Heat content of these gas is very high
D. There is insufficient gas coverage.

Q:- N Efficient weld metal volume reduction can be achieved by

A. Changing from double V to single V

B. Changing from single V to Single U

C. Changing from double U to Double V

D. Changing from single J to Single V

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Q:- Voltage and amperage meter have been removed from MIG/MAG(GMAW) calibration invalid, the equipment should be

A. Guaranteed

B. Only used for top welds

C. Only used for valeted

D. Monitored density by the welding inspector for amperage and voltage

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Q:- when examining completed macro test the recorder hardness figures were 5HV points over the maximum permitted what would you course of action being?

A. apply for concession
B. reject the whole products
C. request are test
D. accept it as only just over the permitted value

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Q:- Austenetic stainless steel are not susceptible to HIC because ?

A. They are non magnetic
B. They are stainless and conta

Q:- Austenetic stainless steel are not susceptible to HIC because ?

A. They are non magnetic

B. They are stainless and contain chromium

C. They don’t harden during heating and cooling

D. They are highly ductile

Q.generally the most suitable method of detecting lack of side wall fusion on z single v butt weld (35° to 35° bevel angle) would be?

1). UT

2). RT

3). MPI

4). Both A&B

5). All of the above

Q:- The main problem with solution treatment of stainless steel is that?

(A). Controlling the rate of temperature rise
(B). Controlling the cooling rate
(C). Length of the soak period
(D). High risk of distortion

Q:- In welding procedure transfers joint tensile test the following observation were made. The specimen CSA was recorded as 40mm X 20mm and the max load applied was recorded as ____ . What is the UTS?

(A). 237.5KN/mm^2

(B). 247.5 N/mm^2

(C). 24.5 N/mm^2

(D). 237.5 N/mm^2


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Q:- while inspecting a weld on a 100mm thick high carbon steel plate with tolerance of +5mm you find the weld is visual acceptable, however the parent material has several arc strikes present adjusted the weld approximately 3mm drop deep, what course of action would you take?

(A). none I am only inspecting the weld

(B). recommended that the area be dressed smooth

(C). recommended that the area be dressed smooth followed by MPI

(D). high carbon steel is net susceptible to cracking so I would weld over the arc strikes then blend them

Q:- In cross joint tensile test following observation were made, specimen width-20mm, material thickness; 20 mm max load; 180kN, breaker position; parent plate What is the UTS?

(A). 45KN/mm^2
(B). 450N/mm^2
(C). 39KN/mm^2
(D). 39N/mm^2

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Q:- A STAR test is carried out to determine which of the following?

(A). A quick indication of weld quality for welder qualification test
(B). The test result can be used to verify that the material has not been adversely mechanically damaged by the heat during welding
(C). An indication of material elongation properties 

(D). An indication of through thickness ductility (in the Z direction)

Q:- Prior to production welding commencing you notice that the drawing has been revised and now Includes a pipe with a wall thickness of 36mm, your WPS only covers wall thickness of 28mm, what course of action would you follow?

A. Continuous with production welding as the difference is less than 10%
B. Apply for a concession to change the thickness to permit the welding on the 36mm wall thick pipe
C. Change the range on the WPS to 36mm and allow welding to commence
D. Allowing welding to commence then apply for a concession

Q:- Assuming the name material and welding procedure were used, which of the following would require the highest preheat?

1. But weld in 35mm plate
2. Cruciform joint in 25mm plate
3. Tee joint butt welded in 30mm plate1
4. tee joint fillet welded in 20mm plate

Q:- When reviewing a radiograph of a weld made by the MAG(GMAW)process, you notice a very bright white inclusion in the weld, which of the following best describes this indication

1. Tungsten inclusion
2. Spatter on the cap
3. Copper inclusion
4. It is most likely to be a film mark

Q:-Why is stress relief (PWHT) some times carried out on weldments :

(a) To dissolve entrapped hydrogen.

(b) To remove residual stresses.

(c) To fuse planar defects.

(d) All of the above.

Q:- In friction welding, is the metal at the interface in the :

(a) Liquid state.
(b) Solid state.
(c) Plastic state.
(d) Elastic state.

Q:-Most metals expand when heated, the change in length is expressed as :

(a) Thermal conductivity.

(b) Modulus of elasticity.

(c) Coefficient.

(d) Yielding.

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Eurotech offer seven days of intensive CWI training that will help prepare you to pass the CWI certification tests. AWS CWI (American Welding Society - Certified Welding Inspector) course and exam will be performed on 18-24 December 2015 in Chennai India.

Course Description

• Welding Inspection Technology Workshop - 3 DAYS
• Visual Inspection Workshop( 1.5 Day)
• API 1104 Code Clinic( 1.5 DAY)

Course Benefits:

• Official Course for AWS CWI Certification
• 6 Days Intensive Training
• Includes Basic NDT Techniques and Welding Techniques
• Results in Deeper Understanding of Welding Quality

Contact us by email or phone about the course. Puneet Sharma Email  id: aws.cwi.training@gmail.com +91-8196980555

Click Here To Read AWS CWI Exam Preparation Blog For India, Chennai, Mumbai, Ahmedabad, New Delhi

Q:- Which of the following statements is true :

(a) Oxygen-fuel gas cutting is essentially an oxidization thermal cutting Process.

(b) Oxygen-fuel gas cutting is essentially a melting process.

(c) The only fuel gas used is acetylene.

(d) Propane is the preferred fuel gas in oxygen-fuel gas cutting as it produces Hotter flame.

Q:- Three essential factors for producing fusion weld are melting, removal of surface oxide from the joint surfaces and elimination of atmosphere from the region of the arc. Name the fourth one :

(a) The weld must be free from stress.

(b) The filler material must match that of the weld.

(c) The completed joint must at lease match the mechanical properties.

(d) An arc for a heat surface.

Q:- Which one of the following statements is false :

(a) Surface breaking defects are usually more detrimental to a weld in Comparison with sub-surface defects.

(b) The HAZ's of a steel weld usually have a higher tensile strength than The weld metal.

(c) Lameller tearing may occur within the fusion zone of large fillet welds.

(d) PWHT may stress relieve.

Q:- What is the possible cause of too mush restraint of the parent material during welding :

(a) Restraint is always desirable.

(b) It may lead to cracking, especially with small welds between large components.

(c) It will cause too much distortion.

(d) It will cause lamellar tearing if it is present on a corner joint.

Q:-A martensite grain structure :

(a) Is always present in welds on steel.

(b) Is brittle grain structure .

(c) Is obtained when the preheat temperature exceeds 200*c

Q:- Which of the following standards is entitled imperfections in Metallic fusion welds With explanation :

(a) BS EN 25817.

(b) BS EN 26520.

(c) BS EN 22553.

(d) BS EN 24165.

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This is your chance to become Certified as one of the following:

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Puneet Sharma | Call : 08196980555 | E-Mail : aws.cwi.training@gmail.com
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Q:-High Phosphorous contents in carbon steels may cause :

(a) Cold shortness.

(b) Hot shortness.

(c) An increase in ductility.

(d) An increase in malleability.

Q:- How do you convert psi to N/mm2 :

(a) Divide by 144.9.

(b) Multify by 25.4.

(c) Divide by 14.7.

(d) Multify by 14.7.

Q:-How many Mpa are equal to 1 N/mm2 :

(a) 144.9. 

(b) 25.4. 

(c) 14.7. 

(d) 1.

Q:- What is the UTS of a material :

(a) The proof stress.
(b) The maximum load a specimen can withstand.
(c) The limit of proportionality.
(d) The point of plastic deformation.

Q:- What is the purpose of a rectifier :

(a) To adjust the voltage.
(b) To adjust the amperage.
(c) To covert ac to dc.
(d) To reduce the chance of arc strike

Q:- welding process using equipment with a flat characteristic :

(a) Will require a permanent or temporary backing to be pre placed on the Root side of the welds.

(b) Has the advantage of being able to use any type or size of electrode.

(c) Is likely to be using an electrode less than 2 mm dia.

(d) Is likely to be using an electrode more than 2 mm dia.

Q:- Which of the following is discontinuity which might be found in sand casting :

(a) Incomplete penetration.
(b) Undercut.
(c) Pipe.
(d) Shrinkage.