| 1. | Which of the following is not true regarding the reaming operation ? | |
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reaming is a accurate way of sizing and finishing a hole
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for reaming operation, the hole drilled is always slightly under size
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reamer can not originate a hole
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in reaming the Spindle speed should be double of the drilling speed
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Report Question| 2. | _________ drill is used in wooden and soft sheet jobs ? | |
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twist drill
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flat drill
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straight fluted drill
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none of the above
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| 3. | Which of the following is a multi-point cutting tools ? | |
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reamer
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fly cutter
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boring tool
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slotting tool
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| 4. | A pillar type drilling machine is also know as a ? | |
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round column section drilling machine
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radial drilling machine
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sensitive drill machine
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gang type drilling machine
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| 5. | In a taper shank of a twist drill, a tang is provided at the end ? | |
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drilling the drill and preventing it from slipping
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avoiding sharp edges at the end
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saving material and reducing the weight of drill
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increasing length of drill
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| 6. | If the drill bit is over heated, the causes are ? | |
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cutting speed is too high, clearance angle is not correct
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feed rate is too high, cooling ineffective
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point angle is incorrect, drill is not sharp
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all of these
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| 7. | What is the helix angle of general purpose drill ? | |
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118°
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27.5°
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59°
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12°
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| 8. | The distance a drill moves into the work for each revolution of the spindle is called ___ ? | |
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feed of drill
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speed of drill
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depth of drill
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all of these
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| 9. | The point angle of twist drill depends upon the ? | |
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cutting speed
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type of drilling machine
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size of the drill
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material to be drilled
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| 10. | Drill sleeve is used when the taper shank of the drill is ? | |
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smaller than the machine spindle
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larger than the machine spindle
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equal to the machine spindle
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none of the above
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