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Joining Questions Set 18:

Quiz Mode

Which of the following is not a type of arc welding?

Electro slag

Air acetylene

Submerged

Plasma

Solution:

What are the main elements that make up solder?

Copper and tin

Tin and lead

Lead and copper

Tin and silver

Solution:

Which of the following materials is not used to make non-consumable electrodes?

Sodium

Carbon

Graphite

Tungsten

Solution:

What is the typical capacity range of an automatic welding machine?

100 to 200A

300 to 400A

400 to 500A

800 to 3000A

Solution:

In electric arc welding, arc blow is observed when using

alternating current

direct current

weak magnetic materials

all of the above

Solution:

Which of the following welding defects occurs due to melting or burning away of the base metal?

Cracking in weld metal

Spatter

Cold cracking

Undercut

Solution:

Fluxes react with oxides to produce slag. Compared to the melting temperature of the parent metal, the melting temperature of the slag is:

higher

lower

may be higher or lower depending upon the flux used

the same

Solution:

In which welding process is acetylene supplied at low pressure?

Oxygen is supplied at low pressure

Acetylene is supplied at low pressure

Both oxygen and acetylene are supplied at low pressure

Both oxygen and acetylene are supplied at high pressure

Solution:

In GTAW (Gas Tungsten Arc Welding), a constant and stable arc gap is maintained at a constant current level. This is due to the fact that:

the tungsten electrodes are not consumed

a constant current source is used

argon is used as the shielding gas

all of the above

Solution:

Reduction is a process of producing metal powders by:

injecting molten metal through a small orifice in a reduced pressure chamber

reducing the size of metals by milling in a ball mill

removal of oxygen from metal oxides using reducing agents, such as hydrogen, carbon monoxide

all of the above

Joining Questions Set 18:

Which of the following is not a type of arc welding?

Solution:

What are the main elements that make up solder?

Solution:

Which of the following materials is not used to make non-consumable electrodes?

Solution:

What is the typical capacity range of an automatic welding machine?

Solution:

In electric arc welding, arc blow is observed when using

Solution:

Which of the following welding defects occurs due to melting or burning away of the base metal?

Solution:

Fluxes react with oxides to produce slag. Compared to the melting temperature of the parent metal, the melting temperature of the slag is:

Solution:

In which welding process is acetylene supplied at low pressure?

Solution:

In GTAW (Gas Tungsten Arc Welding), a constant and stable arc gap is maintained at a constant current level. This is due to the fact that:

Solution:

Reduction is a process of producing metal powders by:

Solution:

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