Q.1

A tool used to withdraw a drill from the sleeve is called

  • drill remover
  • drill puller
  • drift
  • drill drawer
Q.2

The tool life is affected by

  • depth of cut
  • cutting speed
  • feed
  • all of these
Q.3

The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from

  • 10 to 20 m/min
  • 18 to 30 m/min
  • 24 to 45 m/min
  • 60 to 90 m/min
Q.4

The cutting fluid mostly used for machining alloy steels is

  • water
  • soluble oil
  • dry
  • sulphurised mineral oil
Q.5

Which of the following operation is first performed?

  • Spot facing
  • Boring
  • Tapping
  • Drilling
Q.6

The grooving is an operation of

  • bevelling the extreme end of a workpiece
  • embossing a diamond shaped pattern on the surface of a workpiece
  • reducing the diameter of a workpiece over a very narrow surface
  • enlarging the end of a hole cylindrically
Q.7

Flank wear occurs mainly on the

  • nose part, front relief face and side relief face of the cutting tool
  • face of the cutting tool at a short distance from the cutting edge
  • cutting edge only
  • front face only
Q.8

In oblique cutting system, the tool may or may not generate a surface parallel to the workface.

  • Yes
  • No
Q.9

The operation of smoothing and squaring the surface around a hole is known as

  • counter-sinking
  • counter-boring
  • trepanning
  • spot facing
Q.10

The process of removing metal by a cutter which is rotated against the direction of travel of workpiece, is called

  • up milling
  • down milling
  • face milling
  • end milling
Q.11

Relief angles on high speed steel tools usually vary from

  • 0° to 3°
  • 3° to 10°
  • 10° to 20°
  • 20° to 30°
Q.12

In reaming process

  • metal removal rate is high
  • high surface finish is obtained
  • high form accuracy is obtained
  • high dimensional accuracy is obtained
Q.13

The addition of lead, sulphur and phosphorus to low carbon steels, help to

  • reduce built up edge
  • break up chips
  • improve machinability
  • all of these
Q.14

Tool life is measured by the

  • number of pieces machined between tool sharpenings
  • time the tool is in contact with the job
  • volume of material removed between tool sharpenings
  • all of the above
Q.15

The cutting fluid mostly used for machining steel is

  • water
  • soluble oil
  • dry
  • heavy oils
Q.16

Flank wear depends upon the

  • hardness of the work and tool material at the operating temperature
  • amount and distribution of hard constituents in the work material
  • degree of strain hardening in the chip
  • all of these
Q.17

The cutting speed is zero at the periphery and it is maximum at the centre of the drill.

  • Yes
  • No
Q.18

The size of a lathe is specified by the

  • length between centres
  • swing diameter over the bed
  • swing diameter over the carriage
  • all of these
Q.19

Cutting fluids are used to

  • cool the tool
  • improve surface finish
  • cool the workpiece
  • all of these
Q.20

The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond, is called

  • truing
  • dressing
  • facing
  • clearing
Q.21

The plunge grinding requires very __________ speed.

  • high
  • low
Q.22

A feed gear box for a screw cutting lathe is designed on the basis of

  • geometric progression
  • arithmetic progression
  • harmonic progression
  • none of these
Q.23

The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)

  • VnT = C
  • VTn = C
  • Vn/T = C
  • V/Tn = C
Q.24

Soft materials can not be economically ground due to

  • high temperature involved
  • frequent wheel clogging
  • rapid wheel wear
  • low work piece stiffness
Q.25

The lip angle is the angle

  • between the tool face and the ground end surface of flank
  • made by the face of the tool and the plane parallel to the base of the cutting tool
  • between the face of the tool and a line tangent to the machined surface at the cutting point
  • none of the above
Q.26

The tool may fail due to

  • cracking at the cutting edge due to thermal stresses
  • chipping of the cutting edge
  • plastic deformation of the cutting edge
  • all of these
Q.27

In metal cutting operations, chips are formed due to plastic deformation of the metal.

  • Agree
  • Disagree
Q.28

The structure of a grinding wheel depends upon

  • hardness of the material being ground
  • nature of the grinding operation
  • finish required
  • all of these
Q.29

The infeed grinding is similar to plunge grinding.

  • Yes
  • No
Q.30

In conventional milling, the cutting force tends to lift the work.

  • True
  • False
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