| 1. | Which one of the joint fails first due to increase in temperature ? | |
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riveting
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soldering
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brazing
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welding
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Report Question| 2. | When brazing is completed workpiece should be cooled ? | |
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slowly
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rapid
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under cool water
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at any rate
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| 3. | Which of the following flux material is extremely corrosive and used for shouldering the copper sheets, brass sheets, and tin plates ? | |
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zinc chloride
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copper chloride
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ammonium chloride
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silver chloride
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| 4. | Which joining operation is used for part of bicycle frames and rims ? | |
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soldering
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brazing
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welding
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riveting
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| 5. | A hachet type soldering has shank fitted at 90° to the head having _____ ? | |
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B-shaped
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V-shaped
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H-shaped
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S-shaped
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| 6. | The preferred material for soldering bit is ? | |
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lead
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zinc
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copper
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tin
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| 7. | What is brazing filler rod made of ? | |
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iron
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brass
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tin
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lead
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| 8. | Brazing is used to join Which two metals ? | |
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brass to brass
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aluminium to aluminium
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steel to steel
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copper to copper
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| 9. | Melting point in hard shoulder lies above _______ ? | |
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250°c
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150°c
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450°c
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350°c
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| 10. | Melting point in hard shoulder lies above _______ ? | |
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250°c
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150°c
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450°c
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350°c
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