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Mechanical Engineering Objective Questions { Production Technology }



862. For tapping purpose, drilling is done by a drill which cuts a hole
A.Of outside diameter of thread
B.Of inside diameter of thread
C.Of effective diameter of thread
D.Which leaves only about 60-75% of depth of triangle to be taken out by tap
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863. In down milling cutter teeth and workpiece move in
A.Same direction
B.Opposite direction
C.Perpendicular direction
D.Tool moves down and work move up
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864. In which type of milling operation, the chip is cut off at thinnest place and the chip thickness increases along chip length
A.Up milling
B.Down milling
C.End milling
D.Climb milling
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865. In which type of milling maximum friction is caused
A.Up milling
B.Down milling
C.End milling
D.Climb milling
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866. In which milling operation, the cutting force tends to lift the workpiece
A.Conventional
B.Down
C.Climb
D.End
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867. Any number of equal divisions can be obtained on milling machine by
A.Plain indexing
B.Simple indexing
C.Compound indexing
D.Differential indexing
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868. In finish grinding, the grinding ratio varies from
A.1.0 to 5.0
B.5.0 to 10.0
C.10.0 to 25.0
D.25.0 to 50.0
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