WELDING - Set 7

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Q10558

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Why the cylinder key is not removed from the cylinder during welding?

A It is meant for either work also

B In case of emergency it helps to close the cylinders quickly

C It is used to balance the regulator operation

D It can be used as a small hammer

Q10559

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What is the effect, if interchanged to fix oxygen and acetylene regulators to cylinders?

A Spanner damaged

B Can damage the threads

C Hose damaged

D Regulator set properly

Q10560

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What is the reason for metal surface to be cleaned before soldering?

A Keep surface to bright

B Easy handling of the soldering iron

C Solder will never stick to a dirty surface

D Proper amount of heat absorbed

Q10561

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How to achieve a good solder joint?

A Use solder with high melting point

B Prepare metal edges clean

C Correct solder and flux to be selected

D Use solder with low melting point

Q10562

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What is the reason for weak joint while soldering?

A Application of incorrect flux

B Solder as much surface as possible

C Move the soldering iron slowly along the work

D The point of the soldering iron touches only a portion of the area

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