Internal gear cutting operation can be performed by
Milling
Shaping with rack cutter
Shaping with pinion cutter
Hobbing
Correct Answer :
C. Shaping with pinion cutter
Related Questions
Grinding wheels should be tested for balance
Only at the time of manufacture
Before starting the grinding operation
At the end of grinding operation
Occasionally
Cast iron during machining produces
Continuous chips
Discontinuous chips
Continuous chips with built-up edge
None of these
The height of each tooth of a broach is
Same throughout
In progressively decreasing order
In progressively increasing order
None of these
In gear hobbing
Only hob rotates
Only gear blank rotates
Both hob and gear blank rotates
Neither hob nor gear blank rotates
In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
3500⁰C
3200⁰C
2900⁰C
2550⁰C
The angle made by the face of the tool and the plane parallel to the base of cutting tool is called
Rake angle
Cutting angle
Clearance angle
Lip angle
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
Fixtures are used
For holding and guiding the tool in drilling, reaming or tapping operations
For holding the work in milling, grinding, planing or turning operations
To check the accuracy of workpiece
None of the above
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
The in-feed grinding is used to
Produce tapers
Grind shoulders and formed surfaces
Grind long, slender shafts or bars
All of these
An expendable pattern is used in
Slush casting
Squeeze casting
Centrifugal casting
Investment casting
The grinding wheel speed (surface speed in m/min) usually varies from
500 to 1000
1000 to 1500
1500 to 2000
2000 to 2500
The abrasive recommended for grinding materials of high tensile strength is
Silicon carbide
Aluminium oxide
Sand stone
Diamond
The chuck used for setting up of heavy and irregular shaped work should be
Four jaw independent chuck
Three jaw universal chuck
Magnetic chuck
Drill chuck
The structure of a grinding wheel depends upon
Hardness of the material being ground
Nature of the grinding operation
Finish required
All of these
The crystal structure of austenite is
Body centred cubic
Base centred cubic
Hexagonal closed packed
Body centred tetragonal
The operation of making a cone-shaped enlargement of the end of a hole is known as
Counter-sinking
Counter-boring
Trepanning
Spot facing
As tool and work are not in contact in EDM process
No relative motion occurs between them
No wear of tool occurs
No power is consumed during metal cutting
No force between tool and work occurs
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
In up-cut milling the work piece is fed
Against the rotating cutter
At angle of 60° to the cutter
In the direction of the cutter
At the right angle to the cutter
For softer materials, the point angle of the drill is kept
Equal to 118°
Less than 118°
More than 118°
Any one of these
Crater wear is mainly due to the phenomenon known as
Adhesion of metals
Oxidation of metals
Diffusion of metals
All of these
The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece, is called
Up milling
Down milling
Face milling
End milling
The example of snag grinding is
Trimming the surface left by sprues and risers on castings
Grinding the parting line left on castings
Removing flash on forgings
All of these
Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
Low carbon steel
Titanium
Copper
Tin
A tool used to withdraw a drill from the sleeve is called
Drill remover
Drill puller
Drift
Drill drawer
A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2mm depth by a cutter of 10 mm diameter between points (0,0) and (100,100) on the XY plane (dimensions in mm). The feed rate used for milling is 50 mm/min, milling time for the slot (in seconds) is
120
170
180
240
Internal gear cutting operation can be performed by
Milling
Shaping with rack cutter
Shaping with pinion cutter
Hobbing
In a plain milling cutter, the portion of the gash adjacent to the cutting edge on which the chip impinges is called
Face
Fillet
Land
Lead
The factor considered for evaluation of machinability is
Cutting forces and power consumption
Tool life
Type of chips and shear angle
All of these