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
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
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
865. In which type of milling maximum friction is caused
A.Up milling
B.Down milling
C.End milling
D.Climb milling
866. In which milling operation, the cutting force tends to lift the workpiece
A.Conventional
B.Down
C.Climb
D.End
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
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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