Q.1

The helix angle of a drill is more thanfor drilling aluminium.

  • Agree
  • Disagree
Q.2

Side relief angle of a single point 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 tool
  • between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Q.3

A dynamometer is a device used for the measurement of

  • chip thickness ratio
  • forces during metal cutting
  • wear of the cutting tool
  • deflection of the cutting tool
Q.4

In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.if the cutting speed is halved, then tool life will become

  • half
  • two times
  • eight times
  • sixteen times
Q.5

The tool life is said to be over if

  • poor surface finish is obtained
  • there is sudden increase in cutting forces and power consumption
  • overheating and fuming due to heat of friction starts
  • all of the above
Q.6

The operation performed on a shaper is

  • machining horizontal surface
  • machining vertical surface
  • machining angular surface
  • all of these
Q.7

If the grain size is __________ the tool life is better.

  • smaller
  • larger
Q.8

Broaching is applied for machining

  • internal and external surfaces
  • round or irregular shaped holes
  • external flat and contoured surfaces
  • all of these
Q.9

Chemical milling operation is performed

  • on universal milling machine
  • on plain milling machine
  • in a tank containing an etching solution
  • any one of these
Q.10

Flank wear is due to the abrasive action of hard mis-constituents including debris from built up edge as the work material rubs the work surface.

  • Correct
  • Incorrect
Q.11

Half nut is used to lock the lathe carriage to the lead screw for thread cutting.

  • True
  • False
Q.12

The thrust force will increase with the increase in

  • side cutting edge angle
  • tool nose radius
  • rake angle
  • end cutting edge angle
Q.13

The operation of reproduction of an outline of a template on a workpiece is called face milling.

  • Yes
  • No
Q.14

The advantage of a broaching operation is that

  • rate of production is very high
  • high accuracy and high class of surface finish is possible
  • roughing and finishing cuts are completed in one pass of the tool
  • all of the above
Q.15

In drilling bakellite and fibrous plastics, the point angle of a drill is

  • 90°
  • 118°
  • 135°
  • 150°
Q.16

Internal or external threads of different pitches can be produced by

  • pantograph milling machine
  • profiling machine
  • planetary milling machine
  • piano-miller
Q.17

Which of the following statement is correct in regard to centreless grinding?

  • The workpiece is supported throughout its entire length as grinding takes place.
  • It is a continuous process and adopted for production work.
  • It requires no holding device for the work.
  • all of the above
Q.18

In a shaper, the metal is removed during

  • forward stroke
  • return stroke
  • both the forward and return strokes
  • neither the forward nor the return stroke
Q.19

The broaching operation in which the work moves past the stationary tool is called

  • pull broaching
  • push broaching
  • surface broaching
  • continuous broaching
Q.20

The usual value of the point angle of a drill is

  • 70°
  • 100°
  • 118°
  • 130°
Q.21

The tool life __________ as the cutting speed increases.

  • decreases
  • increases
Q.22

For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is

  • 10 m/min
  • 15 m/min
  • 22 m/min
  • 30 m/min
Q.23

Which of the following statement is correct about hot machining?

  • It requires less power than machining metals at room temperature.
  • The rate of tool wear is lower.
  • It is used for machining high strength and high temperature resistant materials.
  • all of the above
Q.24

Continuous chips with built up edge are formed during machining of

  • brittle metals
  • ductile metals
  • hard metals
  • soft metals
Q.25

The shear velocity is the velocity of

  • tool relative to the workpiece
  • chip relative to the tool
  • tool along the tool face
  • none of these
Q.26

In centreless grinders, the regulating wheel is inclined at

  • 0° to 8°
  • 9° to 15°
  • 16° to 20°
  • 21° to 25°
Q.27

In a shaper

  • tool is stationary and work reciprocates
  • work is stationary and tool reciprocates
  • tool moves over stationary work
  • tool moves over reciprocating work
Q.28

The specific cutting energy used for establishing the machinability of the metal depends upon its

  • coefficient of friction
  • microstructure
  • work hardening characteristics
  • all of these
Q.29

The aluminium oxide abrasive is chiefly used for grinding

  • high speed steel
  • carbon steel
  • wrought iron
  • all of these
Q.30

For turning small taper on long workpiece, the suitable method is

  • by a form tool
  • by setting over the tail stock
  • by a taper turning attachment
  • by swivelling the compound rest
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