| 1. | The brass and bronze are welded by ............. flame ? | |
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neutral
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oxidising
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carburising
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all of these
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Report Question| 2. | The cutting edge of a chisel should be ? | |
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hardened
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tempered
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hardened and tempered
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case hardened
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| 3. | In piercing operation, the clearance is provided on ? | |
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punch
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die
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half on the punch and half on the die
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either on punch or die depending upon designer's choice
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| 4. | The acetylene cylinder is usually painted with ? | |
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black colour
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white colour
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maroon colour
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yellow colour
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| 5. | When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as ? | |
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die casting method
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slush casting method
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permanent mould casting method
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centrifugal casting method
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| 6. | The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called ? | |
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shearing
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piercing
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punching
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blanking
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| 7. | For welding plates of thickness less than 5 mm. its edges ? | |
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do not require bevelling
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should be bevelled to a single-V or U-groove
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should have a double-V or U-groove on one side
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should have a double-V or U-groove on both sides
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| 8. | The advantage of thermit welding is that ? | |
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all parts of the weld section are molten at the same time
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weld cools almost uniformly
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results in a minimum problem with internal residual stresses
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all of the above
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| 9. | In a cold chamber die casting machine ? | |
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melting pot is separate from the machine
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melting pot is an integral part of the machine
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melting pot may have any location
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low temperature and pressure is used
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| 10. | A basic hole is one whose ? | |
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lower deviation is zero
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upper deviation is zero
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lower and upper deviations are zero
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none of these
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