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  3. 1. _____ lead to distortion surrounding the welded

1. _____ lead to distortion surrounding the welded joints. (a) Residual stresses (b) Cracks (c) Overlap...

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Mechanical Engineering

1. _____ lead to distortion surrounding the welded joints.

(a) Residual stresses (b) Cracks (c) Overlap (d) Incompletefusion

2. Which of the following is NOT an issue in welded joints?

(a) Porosity (b) Cracks (c) Residual Stresses (d) Hot Shots

3. Which of the following is a solid state weldingprocesses?

(a) Brazing (b) Soldering (c) Cold Welding (d) SMAW

4. In which of the following welding processes, filler metalsonly are melted at temperatures above 450°C?

(a) Brazing (b) Soldering (c) Cold Welding (d) SMAW

5. Which of the following is involved in friction weldingprocess:

(a) Heat (b) Pressure (c) Both of them (d) None of them

6. In resistance welding, the required energy is generated bychemical reactions

(a) True (b) False

Answer & Explanation Solved by verified expert
3.9 Ratings (453 Votes)

1. (a) Residual stresses

  • Internal stresses or residual stresses sometimes formed in base metal due to removing restraints given to welds by fixed components surrounding it.

2. (d) Hot Shots

3.(c) Cold Welding

  • Solid state welding is a group of welding processes which produces coalescence at temperatures essentially below the melting point of the base materials being joined, without the addition of brazing filler metal. Pressure may or may not be used.

4. (a) Brazing

  • It is a joining process using filler metal above 450oC.

5.  (b) Pressure

6. (b) False

  • The heat is generated by resistance offered by the path to the passing current in the resistance welding.
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