Thursday, 31 December 2015

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)

Wednesday, 30 December 2015

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

Tuesday, 22 December 2015

Thursday, 17 December 2015

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

(a) Thermal conductivity.

(b) Modulus of elasticity.

(c) Coefficient.

(d) Yielding.

AWS CWI Seminar Chennai

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Course Description
  • Welding Inspection Technology Workshop - 3 DAYS
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Wednesday, 16 December 2015

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.

Tuesday, 15 December 2015

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.

Monday, 14 December 2015

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.

Sunday, 13 December 2015

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.

Friday, 11 December 2015

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

Wednesday, 9 December 2015

AWS CWI Training Chennai India

Eurotech offer 6 days of intensive CWI (Certified Welding Inspector) training and 1 day Exam that will help prepare you to pass the AWS CWI certification tests. Our experienced instructors will help you learn the material you need to know fast, and show you how to use and understand the latest standards.
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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.

Tuesday, 8 December 2015

Friday, 4 December 2015

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

Wednesday, 2 December 2015

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.