Related Questions

The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.
A Equal to
B Less than
C More than
D None of these
A drill mainly used in drilling brass, copper or softer materials, is
A Flat drill
B Straight fluted drill
C Parallel shank twist drill
D Tapered shank twist drill
In order to ram the sand harder at the back of the mould and softer on the pattern face, a ________ is used.
A Sand slinger
B Squeezing machine
C Jolt machine
D Stripper plate machine
The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from
A 10 to 20 m/min
B 18 to 30 m/min
C 24 to 45 m/min
D 60 to 90 m/min
The cutting speed for drilling copper with high speed steel drills varies from
A 10 to 20 m/min
B 18 to 30 m/min
C 24 to 45 m/min
D 60 to 90 m/min
For softer materials, the point angle of the drill is kept
A Equal to 118°
B Less than 118°
C More than 118°
D Any one of these
For grinding of softer materials, the grinding wheel should have __________ grain size.
A Finer
B Coarser
C Medium
D Any type of
The cutting speed for counter-boring should be _________ that of drilling operation.
A Equal to
B Less than
C Greater than
D None of these
Softer variety of steel may be obtained by
A Cementation process
B Crucible process
C Bessemer process
D Open hearth process
If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then
A The liquid limit of soil always increases
B The liquid limit of soil always decreases
C The liquid limit of soil may increase
D The liquid limit of soil may decrease

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