| 1. | Cutting fluids are used to ? | |
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cool the tool
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improve surface finish
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cool the workpiece
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all of these
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Report Question| 2. | Carbide tipped tools usually have ? | |
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negative rake angle
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positive rake angle
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any rake angle
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no rake angle
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| 3. | The angle formed by the leading edge of the land with a plane having the axis of the drill, is called ? | |
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helix or rake angle
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point angle
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chisel edge angle
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lip clearance angle
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| 4. | In a single point tool, the angle between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base, is known as ? | |
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side relief angle
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end relief angle
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back rake angle
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side rake angle
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| 5. | Lathe bed is made of ? | |
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mild steel
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high speed
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pig iron
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chilled cast iron
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| 6. | The tool may fail due to ? | |
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cracking at the cutting edge due to thermal stresses
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chipping of the cutting edge
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plastic deformation of the cutting edge
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all of these
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| 7. | The enlarging of an existing circular hole with a rotating single point tool is called ? | |
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boring
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drilling
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reaming
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internal turning
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| 8. | The factor which affects the tool life is ? | |
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tool geometry
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cutting speed
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feed rate
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all of these
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| 9. | In machining metals, surface roughness is due to ? | |
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feed marks or ridges left by the cutting tool
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fragment of built-up edge on the machined surface
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cutting tool vibrations
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all of these
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| 10. | Which of the following statement is correct about nose radius ? | |
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It improves tool life
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It improves the surface finish
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both (a) and (b)
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none of these
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