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