Thursday, 20 December 2018

Friday, 14 December 2018

Q:-With reference to the various grades of stainless steel which of the following statement is true?

1. They are all nonmagnetic
2. Only certain grades can be used for service at a very low temperature
3. They are all 100 ar for the mag
4. They are all very high thermal conductivity

Friday, 7 December 2018

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

A. A high integrity weld is easily achievable 
B. The power source gives a high duty cycle 
C. A high voltage spark is used to initiate the arc 
D. The output from the power source is high

Thursday, 5 July 2018

Q:- Which of the following may increase the risk of haz cracking when welding thick section carbon manganese steel?

1. Slow cooling after welding 
2. Low moisture content in the electrode covering 
3. Use of a steel grade with a low cev 
4. Use of a low heat input 

Tuesday, 15 May 2018

Q:-What is meant by the term duty cycle?

A. How long a welder can weld for in a given period 
B. The amount of time the electrodes are being used 
C. The amount of time a welding machine can be weld 
D. The amount of electricity being consumed 

Tuesday, 24 April 2018

Q:- Why is the arc shielded. When using an arc welding process?

A. To eliminate the colling from the arc 
B. To retarded cooling rate of solidify metal 
C. To excluded the atmosphere from the arc region 
D. The arc not always shielded when using an arc welding process 

Tuesday, 10 April 2018

Q:- Cast and helix are terms that refers to

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

Thursday, 5 April 2018

Q:- Undercutting adjacent to the final bead on the outside of production pipe welds shall:

1. Not be permitted
2. Not be more than 1/32 inch or 12.5% of the pipe wall thickness, whichever is smaller
3. Not be more than 1/8 inch or 6% of the pipe wall thickness, whichever is smaller
4. Always be acceptable if the inspector does not see it
5. None of the above

Monday, 19 March 2018

Tuesday, 20 February 2018

Q:- In a fillet weld fracture test the specimen is broken with

1. The fillet weld in tesnsion 
2. The fillet weld in compression 
3. No specific method need to be adapted 
4. Suitable machining 

Monday, 5 February 2018

Q:- To BS 499 part 2, which of the following is true for a welding symbol?

1. This or arrow side of the joint goes on top of the reference line 
2. This or arrow side of the joint goes below the reference line 
3. This or arrow side of the joint goes in the middle of the reference line 
4. All of the above

Friday, 19 January 2018

What is an active flux?

1. A material used to clean surfaces of the joint through continued chemical reaction
2. A material used to protect the molten weld pool during welding
3. A material used to aid fusion
4. All of the above