| 1. | The metal suitable for bearings subjected to light loads, is ? | |
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silicon bronze
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white metal
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monel metal
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phosphor bronze
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Report Question| 2. | The addition of which of the following improves machining of copper ? | |
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Sulphur
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Vanadium
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Tin
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Zinc
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| 3. | The type of space lattice found in gamma-iron is ? | |
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face centred cubic space lattice
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body centred cubic space lattice
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close packed hexagonal space lattice
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none of these
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| 4. | Which of the following process of steel making is in operation at Tata Iron and Steel Works in Jamshedpur ? | |
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Bessemer process
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Open hearth process
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Duplex process
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Electric process
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| 5. | White cast iron has ? | |
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carbon in the form of carbide
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high tensile strength
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low compressive strength
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all of these
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| 6. | Cast iron has ? | |
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high compressive strength
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excellent machinability
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good casting characteristic
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all of these
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| 7. | The process which improves the machinability of steels, but lowers the hardness and tensile strength, is ? | |
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normalising
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full annealing
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process annealing
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spheroidising
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| 8. | The silicon steel is widely used for ? | |
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connecting rods
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cutting tools
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generators and transformers in the form of laminated cores
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motor car crankshafts
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| 9. | When a low carbon steel is heated upto lower critical temperature ? | |
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there is no change in grain size
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the average grain size is a minimum
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the grain size increases very rapidly
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the grain size first increases and then decreases very rapidly
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| 10. | There are fourteen atoms in a unit cell of ? | |
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body centred cubic space lattice
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face centred cubic space lattice
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close packed hexagonal space lattice
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none of these
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