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Author: Admin | 2025-04-28
Inert gas arc weldingd) none of the mentionedView AnswerAnswer: dExplanation: None of them is type of gas welding. All are included in welding process of type air welding. 8. Spot welding and seam welding are the types of gas welding.a) trueb) falseView AnswerAnswer: bExplanation: This is false. Spot welding and seam welding are included in resistance welding according to the classification of welding.9. Which of the following is the type of the recent welding process?a) laser beamb) frictionc) ultrasonicd) all of the mentionedView AnswerAnswer: dExplanation: These all are the types of recent welding process base on the classification of welding process. These all are high accurate welding process with better production rate. 10. Friction welding is mostly used for rail and road work and joining heavily sections.a) trueb) falseView AnswerAnswer: bExplanation: This is false. Thermit welding is used for rail and road work and joining heavily sections. 11. Pressure must be applied in welding process.a) trueb) falseView AnswerAnswer: bExplanation: Its not necessary that pressure must be applied in welding process. Pressure may be applied or may not be applied in the process of welding. 12. Oxy acetylene welding and oxy-hydrogen welding are the examples of ____ welding.a) gasb) airc) resistanced) frictionView AnswerAnswer: aExplanation: These are the types of gas welding base on the classification of welding. Sometimes, this oxy acetylene welding is also known as oxyfuel welding.Sanfoundry Global Education & Learning Series – Machine Tools and Machining.To practice all areas of Machine Tools and Machining, here is complete set of 1000+ Multiple Choice Questions and Answers.
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