Month: August 2019

Q.31 Which of the following atmospheric action is to be occurs during welding process?     A. oxidizing action     B. Nitriding action     C. Both A and B     D. carbon mono oxide is evolved Ans.: C Q.32 What is Read More …

Q.16 Which of the following is/are electrical properties of an arc?     A. Blow effect at edges     B. Blow effect due to ground currents in the work-piece     C. Arc stability and Arc blow     D. all of the Read More …

Q.01 Joining of two metals by heating is called___     A. heating     B. welding     C. purification of metals     D. all of the above Ans.: B Q.02 Branch of welding in which electric current is used to produce the Read More …