Virtual Labs

What is the purpose of rotating tool used in Friction Stir Welding?

a: To generate heat Explanation

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b: To generate pressure Explanation

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c: To generate friction Explanation

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d: All of the above Explanation

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In conduction welding, the laser energy is primarily absorbed by the

a: The surface of the workpiece Explanation

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b: The entire volume of the workpiece Explanation

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c: Surrounding atmosphere Explanation

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d: The filler material used in the welding process Explanation

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What is the main advantage of Friction Stir Welding over traditional welding methods?

a: Lower welding temperatures Explanation

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b: Higher welding speeds Explanation

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c: Higher quality welds Explanation

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d: All of the above Explanation

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Which one of the following welding has less heat affected zone?

a: Metal inert gas welding Explanation

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b: Laser welding Explanation

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c: Tungsten inert gas welding Explanation

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d: Submerged arc welding Explanation

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What is the typical beam quality M^2 value of the real Gaussian laser beam?

a: <1 Explanation

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b: ≈ 1 Explanation

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c: >1 Explanation

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d: =1 Explanation

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Which of the following is a limitation of laser welding?

a: Low total thermal input Explanation

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b: Welding of highly reflective material Explanation

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c: Both a & b Explanation

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d: None of the above Explanation

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In laser welding, the term keyhole refers to

a: A special type of laser beam used for welding Explanation

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b: A defect caused by improper welding parameters Explanation

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c: A cavity formed in the metal during welding Explanation

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d: The safety features that prevent accidental laser exposer Explanation

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The size and shape of the weld material in friction stir welding depends on which of the following parameters?

a: Tool tilt angle Explanation

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b: Tool plunge depth Explanation

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c: Tool rotational speed Explanation

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d: Pin profile Explanation

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Friction stir welding tool is made up of which material?

a: Soft materials Explanation

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b: Hard materials Explanation

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c: Soft & wear resistant material Explanation

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d: Hard & wear resistant material Explanation

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What happens to beam radius as we move away from beam waist in the direction along the line of propagation of the laser beam?

a: Increases Explanation

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b: Decreases Explanation

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Advanced Welding Techniques