| 1. | Which fuel gas is for under water cutting in deep water ? | |
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LPG
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hydrogen
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acetylene
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methane
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Report Question| 2. | If the blow pipe is moved to and fro frequently while cutting, the kerf will ? | |
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be more
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be less
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not be in size
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not be affected
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| 3. | Which one of the following is NOT function of flux in braze welding ? | |
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Chemically clean the joint
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Evaporate before melting the filler metal
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Remove impurities from the joint
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Allow molten filler metal to flow easily
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| 4. | Non destructive test in welding is _______________ ? | |
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tensile test
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impact test
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fatigue test
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radio graphic test
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| 5. | The size of a welding machine is determined by ? | |
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output amperage
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input amperage
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open circuit voltage
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closed circuit voltage
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| 6. | The size of the cutting nozzle used in oxy-acetylene cutting process depends mainly on ? | |
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thickness of metal to be cut
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purity of oxygen
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duration of cut
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type of cutting blowpipe
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| 7. | The top edge is melted round and the cut face is not smooth in gas cutting. This is due to ? | |
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extremely slow cutting speed
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insufficient acetylene pressure
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the tip being held to high
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too much cutting oxygen pressure
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| 8. | What is the welding rod used for welding aluminium plates ? | |
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high carbon steel
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copper-silver alloy
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pure aluminium
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bronze
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| 9. | The gas flame containing relatively more amount of acetylene than oxygen is called ? | |
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carburizing flame
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neutral flame
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oxidizing flame
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nitriding flame
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| 10. | Which flame is used for gas cutting ? | |
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carburizing flame
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neutral flame
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oxidizing flame
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nitriding flame
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