| 1. | In the parting off tool which angle will help the tool to penetrate in to the work without rubbing at the side ? | |
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top rake angle
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front clearance angle
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back clearance angle
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side clearance angle
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Report Question| 2. | The included angle of counter shrinking portion of a centre drill of a type 'B' used for the protecting the centre hole is ? | |
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75°
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90°
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100°
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120°
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| 3. | What effective change will occur to the tool geometry if the cutting tool is set below the centre height on lathe ? | |
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front clearance angle is increases
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front clearance angle is decreases
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front clearance angle remains the same
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front clearance angle becomes zero
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| 4. | As the rake angle of cutting tool reduce, its cutting strength will ________ ? | |
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increase
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decrease
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no effected of the strength
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none of the above
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| 5. | What is the meaning of the term “crater wear” of a turning tool ? | |
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A blunting of the primary cutting edge.
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A cavity on the cutting face.
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The blunting of the cutting point.
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Due to less side clearance.
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| 6. | A flat surface can be produced by a lathe machine, if the cutting tool moves __________ ? | |
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Parallel to the axis of rotation of the workpiece
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Perpendicular to the axis of rotation of workpiece
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at an angle of 45°
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none of the above
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| 7. | Which of the following control the chip geometry while turning ? | |
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relief angle
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approach angle
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clearance angle
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rake angle
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| 8. | Tool chatter is caused by ? | |
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smaller clearance angle
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larger clearance angle
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high rake angle
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smaller rake angle
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| 9. | The hardest tool material available next to diamond is ? | |
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satellite
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Cubic boron nitride
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ceramic
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cemented carbide
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| 10. | The factor responsible for the formation of Discontinuous chips is ? | |
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low cutting speed and large rake angle
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low cutting speed and small rake angle
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high cutting speed and large rake angle
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high cutting speed and small rake angle
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