Ramsay Test Welding and Metal Working 2

Question 1

Which welding process uses a consumable wire electrode fed automatically through a gun under a shielding gas?

Accepted Answer

MIG (GMAW)

Answer

MIG/GMAW feeds a continuous consumable wire through the gun while shielding gas protects the weld pool.

Question 2

What is the primary purpose of flux in welding?

Accepted Answer

To shield the weld from atmospheric contamination

Answer

Flux creates a protective gas or slag that prevents oxygen and nitrogen from contaminating the molten weld.

Question 3

Which metal has the highest electrical conductivity commonly used in shop wiring?

Accepted Answer

Copper

Answer

Copper is among the best conductors of electricity, making it standard for wiring.

Question 4

When using an oxy-acetylene torch, which gas is the fuel?

Accepted Answer

Acetylene

Answer

Acetylene is the fuel gas and oxygen supports its combustion to produce a high-temperature flame.

Question 5

What does porosity in a finished weld indicate?

Accepted Answer

Trapped gas bubbles weakening the weld

Answer

Porosity is gas pockets trapped in the weld metal that reduce its strength.

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