The angle on which the strength of the tool depends is
Rake angle
Cutting angle
Clearance angle
Lip angle
Correct Answer :
A. Rake angle
Related Questions
The negative rake is usually provided on
High carbon steel tools
High speed steel tools
Cemented carbide tools
All of these
The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is
3.75 m/min
5 m/min
7.5 m/min
15 m/min
High speed steel drills can be operated at about _________ the speed of high carbon steel drills.
One-half
One-fourth
Double
Four times
In a single point tool, the angle between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base, is known as
Side relief angle
End relief angle
Back rake angle
Side rake angle
In the relation VTn = C, the value of n for carbide tools is
0.1 to 0.2
0.20 to 0.25
0.25 to 0.40
0.40 to 0.55
The different spindle speeds on a lathe form
Arithmetical progression
Geometrical progression
Harmonical progression
Any one of these
A mandrel is used to hold
An eccentric work
A heavy work
A thin work
None of these
Lapping is an operation of
Making a cone-shaped enlargement of the end of a hole
Smoothing and squaring the surface around a hole
Sizing and finishing a small diameter hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
The rear teeth of a broach
Perform burnishing operation
Remove minimum metal
Remove maximum metal
Remove no metal
The main purpose of a boring operation, as compared to drilling, is to
Drill a hole
Finish the drilled hole
Correct the hole
Enlarge the existing hole
What is the type of welding defect caused due to shrinkage during solidification and by weld stresses called?
Incomplete fusion
Lamellar tearing
Mismatch
Shrinkage void
In gear hobbing
Only hob rotates
Only gear blank rotates
Both hob and gear blank rotates
Neither hob nor gear blank rotates
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
Gear burnishing is a process for
Surface finishing
Undercut gears
Cycloidal gears
Removing residual stresses from teeth roots
The mechanism of material removal in EDM process is
Melting and Evaporation
Melting and Corrosion
Erosion and Cavitations
Cavitations and Evaporation
In machining metal, cutting force at the cutting edge is measured by a
Wattmeter
Dynamometer
Hydrometer
Pyrometer
In order to obtain a surface finish in the range of 0.75 μm to 1.25 μm , the operation used is called.
Grinding
Lapping
Honing
Buffing
In ultrasonic machining, tool is made of
Tungsten carbide
Brass or copper
Diamond
Stainless steel
In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called
Friction zone
Work-tool contact zone
Shear zone
None of these
Internal gear cutting operation can be performed by
Milling
Shaping with rack cutter
Shaping with pinion cutter
Hobbing
The method of grinding used to produce internal cylindrical holes and tapers, is
Internal cylindrical grinding
Form grinding
External cylindrical grinding
Surface grinding
For softer materials, the point angle of the drill is kept
Equal to 118°
Less than 118°
More than 118°
Any one of these
The main purpose of spheroidising treatment is to improve
Hardenability of low carbon steels
Machinability of low carbon steels
Hardenability of high carbon steels
Machinability of high carbon steels
During normalizing process of steel, the specimen is heated
Between the upper and lower critical temperature and cooled in still air.
Above the upper critical temperature and cooled in furnace.
Above the upper critical temperature and cooled in still air.
Between the upper and lower critical temperature and cooled in furnace.
If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is
0.20
0.30
0.50
0.60
Which of the following parameters influence the axial feed rate in centerless grinding?
Regulating wheel diameter
Speed of the regulating wheel
Angle between the axes of grinding and regulating wheels
All of the above
The operation performed on a shaper is
Machining horizontal surface
Machining vertical surface
Machining angular surface
All of these
A 15 mm drilling machine means that it can drill a hole
Of maximum diameter 15 mm
In 15 mm thick plates
Having cross-sectional area of 15 mm²
None of these
Which of the following operation is first performed?
Spot facing
Boring
Tapping
Drilling
For fast removal of materials during grinding, a _________ grinding wheel is used.
Course grained
Fine grained
Medium grained
None of these