Principles of Tungsten Inert Gas Welding

Current used in GTAW is

a: Direct Current(DC) Explanation

Explanation

b: Alternate Current(AC) Explanation

Explanation

c: Both a & b Explanation

Explanation

d: None of the above Explanation

Explanation

Which of the following materials have highest melting point

a: Tungsten Explanation

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b: Copper Explanation

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c: Aluminium Explanation

Explanation

d: Zinc Explanation

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Which gas is commonly used as shielding gas in GTAW

a: Oxygen Explanation

Explanation

b: Argon Explanation

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c: Helium Explanation

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d: Neon Explanation

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Gas Tungsten Arc welding is usually used in which polarity

a: Direct Current Straight Polarity Explanation

Explanation

b: Direct Current Reverse Polarity Explanation

Explanation

c: Both a & b Explanation

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d: None of the above Explanation

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GTAW nozzle is made up of

a: Aluminium Explanation

Explanation

b: Brass Explanation

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c: Ceramic Explanation

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d: Tin Explanation

Explanation

While using Direct Current Straight Polarity (DCSP) in GTAW, what is the heat balance on the electrode and workpiece?

a: 60% at electrode 30% at workpiece Explanation

Explanation

b: 40% at electrode 60% at workpiece Explanation

Explanation

c: 30% at electrode 70% at workpiece Explanation

Explanation

d: 80% at electrode 20% at workpiece Explanation

Explanation

While using Alternating Current (AC) GTAW what is the arc's heat balance?

a: 60% at electrode 40% at workpiece Explanation

Explanation

b: 50% at electrode 50% at workpiece Explanation

Explanation

c: 30% at electrode 70% at workpiece Explanation

Explanation

d: 40% at electrode 60% at workpiece Explanation

Explanation

GTAW of aluminium is performed by which polarity

a: Direct Current Straight Polarity (DCSP) Explanation

Explanation

b: Alternate Current (AC) Explanation

Explanation

c: Direct Current Reverse Polarity (DCRP) Explanation

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d: Both a & b Explanation

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Oxide cleaning action occurs in which type of polarity in GTAW

a: Direct Current Reverse Polarity (DCRP) Explanation

Explanation

b: Direct Current Straight Polarity (DCSP) Explanation

Explanation

c: Alternate Current (AC) Explanation

Explanation

d: None of the above Explanation

Explanation