Virtual Labs

What is GMAW welding used for?

a: Joining metal sheets Explanation

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b: Welding pipes Explanation

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c: Welding non-metallic materials Explanation

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d: Both A and B Explanation

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What is the purpose of Shielding gas in GMAW welding?

a: To control welding temperature Explanation

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b: To provide filler material Explanation

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c: To protect weld from atmospheric contamination Explanation

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d: To provide an electric current to welding gun Explanation

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How is the heat used to weld by GMAW process generated?

a: with a flame Explanation

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b: By using electric arc Explanation

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c: By a chemical reaction Explanation

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d: None of the above Explanation

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What is the gas used in MIG welding called?

a: Nitrogen dioxide Explanation

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b: Carbon monoxide Explanation

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c: Hydrogen Explanation

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d: Argon Explanation

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What type of electrode is used in GMAW welding?

a: A consumable electrode Explanation

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b: A non-consumable electrode Explanation

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c: A flux-coated electrode Explanation

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d: A filler electrode Explanation

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Which of the following gas is not used for GMAW?

a: Argon Explanation

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b: Helium Explanation

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c: Acetylene Explanation

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d: none of the above Explanation

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Which of the following types of metal transfer provide lowest amount of heat to the workpiece?

a: Spray Transfer Explanation

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b: Short circuiting transfer Explanation

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c: Globular transfer Explanation

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d: Pulsed arc transfer Explanation

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In GMAW, what is the primary material of the consumable electrode for welding carbon steel?

a: Aluminium Explanation

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b: Copper Explanation

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c: Mild steel Explanation

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d: Stainless steel Explanation

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Principles of Metal Inert Gas Welding