| 1. | The drill is held and rotated by ? | |
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body
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shank
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neck
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tang
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Report Question| 2. | _______ is the distance a drill advances in to the work peace in complete rotation ? | |
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cutting speed
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feed
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rpm
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all of these
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| 3. | As per the Indian standard (IS) system, a drill bit is designed as 9.5-HIS5101- HSS. In this the number 9.5 is stands from _____ ? | |
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spindle diameter
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drill diameter
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length of drill
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material of drill
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| 4. | Which one of the following is the part of the taper shank drill Which fits in to the slot of the drilling machine spindle ? | |
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tang
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shank
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body
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land
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| 5. | During drilling it is observed that chip is flowing out continuously through one lip only. The possible reason is ? | |
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unequal lip angle
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excessive point angle
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unequal clearance angle
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all of the above
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| 6. | A reamed hole has patches of poor finish. Which one of the following is the cause for this defect ? | |
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the bored hole has insufficient reaming allowance
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excessive cutting speed
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wrong selection of the reamer for the job
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insufficient coolant supply
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| 7. | The material of twist drill is generally ? | |
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high speed steel
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carbide steel
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diamond
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cast steel
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| 8. | Which among the following is not the factor for selection of cutting speed and feed for reaming a hole with a machine reamer ? | |
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material of the job
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material of the reamer
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diameter of the reamer
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rigidity of the fixture
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| 9. | The suitable cutting fluid for drilling M.S. plate is ? | |
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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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| 10. | Drill chucks are fitted on the drilling machine spindle by means of a/an _________ ? | |
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knurled ring
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drift
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arbor
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none of the above
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