| 1. | Which of the following is not done by using a reamer ? | |
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cleaning a hole drilled out
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tapering a hole
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straightening of tilted hole
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originating a hole
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Report Question| 2. | Taper shank drill are taken out of the spindle hole by a taper cotter called ? | |
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tang
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chuck key
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drift
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none of the above
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| 3. | Depth of cut by a drill in axial direction is called ? | |
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cutting speed
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feed
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Revolution per minute
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none of the above
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| 4. | What is the function of a pilot in a hand reamer ? | |
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provide smooth functioning of the reamer
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provide accurate hole size
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removes the burr from the hole
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keep the Reamer concentric with hole to be reamed
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| 5. | In a formula cutting speed is equal to 3.14×D×n/60, d= diameter of drill in mm, n= rpm, the units of cutting speed is ? | |
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m/s
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mm/sec
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mm/min
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none of the above
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| 6. | In twist drill, two opposite spiral flutes are for ? | |
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avoiding friction of tool with work peace
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artistic purpose only
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cutting material from workpiece
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providing clearance to the chips
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| 7. | Which of the following is not true regarding the reaming operation ? | |
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Reaming is an 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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| 8. | Which drilling machine is preferred for drilling a number of holes in different locations without disturbing the job setting ? | |
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bench drilling machine
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portable drilling machine
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pillar drilling machine
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radial drilling machine
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| 9. | The cutting edge of a standard twist drill are called ? | |
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flutes
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lips
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wedges
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flanks
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| 10. | If the strength of material to be drilled is high, the drill speed should be ........ ? | |
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high
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low
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speed will not depend on
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none of these
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