| 1. | A reamer is used to correct the ? | |
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size and position of the drilled hole
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size and roundness of the hole
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finished and position of the drilled hole
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finished and size of the drilled hole
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Report Question| 2. | In the letter drill series, the largest drill size is equal to __________ ? | |
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10.32 mm
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10.49 mm
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12.01 mm
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15.00 mm
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| 3. | Which one of the following coolants is used for reaming aluminium workpiece ? | |
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soluble oil
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water
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air
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kerosene
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| 4. | Which one of the following is used to hold the straight shank drill having diameter less than 12 mm ? | |
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drill chuck
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drill 'key'
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drill socket
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drill drift
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| 5. | What will be the result if the clearance angle in drill is increased ? | |
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poor wedging action
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weak cutting edge
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rough hole surface
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increased point angle
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| 6. | In the drill, the cone shaped end Which does the cutting is called ? | |
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tang
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shank
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point
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land
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| 7. | For a particular diameter of drill if spindle speed of machine is increased, the cutting speed is __________ ? | |
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increase
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decrease
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same as
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none of the above
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| 8. | The relief angle given behind the cutting lips is called ? | |
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lip clearance angle
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helix angle
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rake angle
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chisel edge angle
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| 9. | Drilling is followed by ? | |
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taping
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boring
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reaming
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all of the above
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| 10. | A wedge like tool is used for removing the taper shank tools from the nose of the machine spindle? What is this called ? | |
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drill chuck
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drill 'key'
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drill socket
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drill drift
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