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Which of the following welding method uses a pool of molten metal?

LohaHridoy
  1. Carbon arc welding
  2. Submerged arc welding
  3. TIG arc welding
  4. MIG arc welding

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1 Answers

AhmedNazir

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Answer: Option 2

This is a well established and extremely versatile method of welding. Submerged-arc welding (SAW) involves the formation of an arc between a continuously fed electrode and the work piece. A blanket of powdered flux, which generates a protective gas shield and a slag (and may also be used to add alloying elements to the weld pool), protects the weld zone. A shielding gas is not required.

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When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as?

Answer: Option 3 When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as Permanent mould casting method

1 Answers 1 views
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Answer: Option 4 Let'

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Answer: Option 1 Let'

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Answer: Option 2 Let'

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Answer: Option 4 Let'

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Answer: Option 1 Silicon is the impurity in cast iron which promotes graphite nodule formation and increases the fluidity of the molten metal.

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Which among the NC operations given below are continuous path operationsArc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)?

Answer: Option 1 Let'

1 Answers 4 views
Which of the following welding processes employs the highest welding temperature ?

Answer: Option 4 Let'

1 Answers 2 views

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