| 1. | Drilling machine used for having job ? | |
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sensitive bench type drilling machine
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pneumatic drilling machine
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radial drilling machine
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co-ordinate drilling machine
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Report Question| 2. | A drilled hole goes out of centre due to ? | |
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improper clamping of workpiece
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workpiece having blow holes
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centre punch mark not being large enough to give proper seat to the chisel edge of drill
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any one of the above
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| 3. | The process of enlarging the end of an existing hole to accommodate the head of socket screw is called ? | |
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spot facing
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boring
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counter-boring
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counter-sinking
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| 4. | The rate of feed depends upon ? | |
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finish required
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material of tool (drill)
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material to be drilled
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all of the above
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| 5. | Which angle of counter sink drill you will select for seating counter sink type A ? | |
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counter sink drill 75°
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counter sink drill 80°
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counter sink drill 90°
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counter sink drill 120°
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| 6. | Some times a stop ring is used to perform a particular operation. Which one of the following operations can be perform by using a stop ring ? | |
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through hole drilling
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blind hole drilling
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pilot hole drilling
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counter-boring
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| 7. | Types of gear used in hand drill machine are _______ ? | |
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worm gear
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bevel gear
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helical gear
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spur gear
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| 8. | Cutting speed is expressed in ? | |
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m/min
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mm/rev
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m/rev
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mm/min
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| 9. | The type of drill used in drilling hard material with high cutting speed is _________ ? | |
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high carbon steel
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high speed steel
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carbide tripped drill
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all of the above
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| 10. | The angle of drill grinding gauge is ? | |
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59°
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118°
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121°
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120°
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