Q.1

Cemented carbide tool tips are produced by powder metallurgy.

  • True
  • False
Q.2

The trade name of a non-ferrous cast alloy composed of cobalt, chromium and tungsten is called

  • ceramic
  • stellite
  • diamond
  • cemented carbide
Q.3

For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of

  • 50°C
  • 100°C
  • 175°C
  • 275°C
Q.4

The angle between the shear plane and __________ is called shear angle.

  • work surface
  • tool face
Q.5

Cutting fluid has no effect on the tool life.

  • True
  • False
Q.6

The surface finish is improved by the increase in

  • cutting speed
  • nose radius
  • true rake angle
  • all of these
Q.7

In order to grind soft material

  • coarse grained grinding wheel is used
  • fine grained grinding wheel is used
  • medium grained grinding wheel is used
  • any one of these
Q.8

In case of turning, as the machining proceeds, the spindle speed must __________ with the decrease in diameter of work.

  • decrease
  • increase
Q.9

When the backgear is engaged in a backgeared headstock, the spindle speed reduces considerably.

  • Agree
  • Disagree
Q.10

Gear burnishing is a process for

  • surface finishing
  • under-cut gears
  • cycloidal gears
  • removing residual stresses from teeth roots
Q.11

In continuous chip cutting, the maximum heat __________ the velocity of cutting.

  • depends upon
  • does not depend upon
Q.12

In centreless grinders, the maximum angular adjustment of the regulating wheel is

  • 5°
  • 10°
  • 15°
  • 20°
Q.13

If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is

  • conical locator
  • cylindrical locator
  • diamond pin locator
  • vee locator
Q.14

In which of the following milling machine, the table can be tilted in a vertical plane by providing a swivel arrangement at the knee?

  • Universal milling machine
  • Plain milling machine
  • Omniversal milling machine
  • Hand milling machine
Q.15

Which of the following statement is wrong?

  • The diamond is the hardest tool material and can run at cutting speeds about 50 times that of high speed steel tool.
  • The ceramic tools can be used at cutting speeds 40 times that of high speed steel tools.
  • The cemented carbide tools can be used at cutting speeds 10 times that of high speed steel tools.
  • The ceramic tools can withstand temperature upto 600°C only.
Q.16

Gears can be best produced on mass production by

  • shaping
  • casting
  • forming
  • hobbing
Q.17

In machining soft materials, a tool with negative relief angle is used.

  • Correct
  • Incorrect
Q.18

The chisel edge angle of a drill is usuallyto 135°.

  • Correct
  • Incorrect
Q.19

The cutting speed for drilling copper 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.20

An open structure of a grinding wheel is used for

  • soft materials
  • tough materials
  • ductile materials
  • all of these
Q.21

The broaching operation in which either the work or the tool moves across the other, is known as

  • pull broaching
  • push broaching
  • surface broaching
  • continuous broaching
Q.22

The tap used to cut threads in a blind hole is

  • taper tap
  • second tap
  • bottoming tap
  • any one of these
Q.23

The factor responsible for the formation of discontinuous chips is

  • low cutting speed and large rake angle
  • low cutting speed and small rake angle
  • high cutting speed and large rake angle
  • high cutting speed and small rake angle
Q.24

The continuous chips are in the form of long coils having the same thickness throughout.

  • Agree
  • Disagree
Q.25

In which of the following machine, the work remains stationary and the tool is rotated?

  • Vertical boring machine
  • Horizontal boring machine
  • Precision boring machine
  • Jig boring machine
Q.26

In a universal milling machine, the table can be swiveled horizontally and can be fed at an angle to the milling machine spindle.

  • True
  • False
Q.27

The type of reamer used for reaming operation in a blind hole, is

  • straight fluted reamer
  • left hand spiral fluted reamer
  • right hand spiral fluted reamer
  • any one of these
Q.28

Side rake angle of a single point cutting tool is the angle

  • by which the face of the tool is inclined towards back
  • by which the face of the tool is inclined sideways
  • between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool
  • between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Q.29

A coarse grained grinding wheel is used to grind

  • hard and brittle materials
  • soft and ductile materials
  • hard and ductile materials
  • soft and brittle materials
Q.30

Climb milling is chosen while machining because

  • the chip thickness increase gradually
  • it enables the cutter to dig in and start the cut
  • the specific power consumption is reduced
  • better surface finish can be obtained
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