The broaching operation in which the work moves past the stationary tool is called
Pull broaching
Push broaching
Surface broaching
Continuous broaching
Correct Answer :
D. Continuous broaching
Related Questions
What is the type of joining process called, where the parts to be welded are kept in contact and rotated relative to each other and axial pressure is applied when the desired temperature is obtained?
Ultrasonic welding
Forge welding
Electron beam welding
Friction welding
The tap used to cut threads in a blind hole is
Taper tap
Second tap
Bottoming tap
Any one of these
A set of eight form relieved milling cutters for each module is provided to enable cutting of gears of different
Materials
Types of gears
Number of teeth
Width of gears
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
Jigs 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
Allowance in limits and fits refers to
Maximum clearance between shaft and hole
Minimum clearance between shaft and hole
Difference between maximum and minimum sizes of hole
Difference between maximum and minimum sizes of shaft
For generating a Coons surface we require
A set of grid points on the surface
A set of grid control points
Four bounding curves defining the surface
Two bounding curves and a set of grid control points
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
Which of the following statement is incorrect with reference of lathe cutting tools?
The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
The heel is that part of the tool which is shaped to produce the cutting edges and face
The base is that surface of the shank which bears against the support and takes tangent pressure of the cut
While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
Independent of index change gear ratio
Dependent on speed change gear ratio
Interrelated to index change gear ratio
Independent of speed and index change gear ratio
In electro-discharge machining, dielectric is used to
Help in the movement of the sparks
Control the spark discharges
Act as coolant
All of these
The angle between the lathe centres is
30°
45°
60°
90°
The material which on machining produces chips with built up edge is
Brittle material
Tough material
Hard material
Ductile material
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
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
The lathe spindles at the nose end have
Internal screw threads
External screw threads
No threads
Tapered threads
For softer materials, the point angle of the drill is kept
Equal to 118°
Less than 118°
More than 118°
Any one of these
A ring gauge is used to measure
Outside diameter but not roundness
Roundness but not outside diameter
Both outside diameter and roundness
Only external threads
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
The method of grinding used to produce internal cylindrical holes and tapers, is
Internal cylindrical grinding
Form grinding
External cylindrical grinding
Surface grinding
In an interchangeable assembly, shafts of size 25.000 -0.010⁺⁰⁰⁴⁰ mm mate with holes of size 25.000 -0.020⁺⁰⁰³⁰, the maximum interference (in microns) in the assembly is
40
30
20
10
Slow speed of the spindle is necessary in
Thread cutting
Turning a work of larger diameter
Turning a hard or tough material
All of these
Which of the following operation is first performed?
Spot facing
Boring
Tapping
Drilling
In drilling brass, a drill with
Zero helix angle is used
Low helix angle is used
High helix angle is used
Any helix angle can be used
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
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
In determining the various forces on the chip, Merchant assumed that the
Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
Only continuous chip without built-up-edge is produced
Cutting velocity remains constant
All of the above
The effect of setting a boring tool above centre height leads to
Increase in the effective rake angle and a decrease in the effective clearance angle
Increase in both effective rake angle and effective clearance angle
Decrease in the effective rake angle and an increase in the effective clearance angle
Decrease in both effective rake angle and effective clearance angle
Work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles on and 2 cycles off Power supply is at 50 Hz. Calculate R.P.M. and energy requirement of the above circular electrodes assuming effective resistance between electrodes as 100 ohm.
2.17 rpm, 600 joules
6.8 rpm, 6 joules
5.03 rpm, 600 joules
22 rpm, 600 joules
In centre less grinders, the maximum angular adjustment of the regulating wheel is
5°
10°
15°
20°