The grinding operation is a
Shaping operation
Forming operation
Surface finishing operation
Dressing operation
Correct Answer :
C. Surface finishing operation
Related Questions
High speed steel drills can be operated at about _________ the speed of high carbon steel drills.
One-half
One-fourth
Double
Four times
The tool life is affected by
Depth of cut
Cutting speed
Feed
All of these
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
While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?
GTAW
Open air cut voltage
Kerf
Gouging
In hot machining, tool is made of
Tungsten carbide
Brass or copper
Diamond
Stainless steel
Any number of equal divisions can be obtained on milling machine by
Direct indexing
Simple indexing
Compound indexing
Differential indexing
In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
High metal removal rate
Dry machining
Use of soft cutting tool
Surface finish
The tool made of cemented carbide wear out faster at
Slow speeds
Medium speeds
Fast speeds
Very fast speeds
Cutting fluids are used to
Cool the tool
Improve surface finish
Cool the workpiece
All of these
With the same tool life, the maximum material per minute is removed by
Increasing the cutting speed
Decreasing the cutting speed
Increasing the depth of cut
Increasing the feed rate
When the temperature of a solid metal increases,
Strength of the metal decreases but ductility increases
Both strength and ductility of the metal decreases
Both strength and ductility of the metal increases
Strength of the metal increases but ductility decreases
Glazing in grinding wheels __________ cutting capacity.
Has no effect on
Increase
Decrease
None of these
Quality screw threads are produced by
Thread milling
Thread chasing
Thread cutting with single point tool
Thread casting
The cutting speed for drilling aluminium, brass and bronze 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
Which of the following statement is correct for orthogonal cutting system?
The cutting edge of the tool is perpendicular to the direction of tool travel.
The cutting edge clears the width of the workpiece on either ends.
The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
All of the above
The rear teeth of a broach
Perform burnishing operation
Remove minimum metal
Remove maximum metal
Remove no metal
The ductile materials, during machining, produce
Continuous chips
Discontinuous chips
Continuous chips with built up edge
Either (A) or (C)
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
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
In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
Cylindrical grinder
Internal grinder
Surface grinder
Tool and cutter grinder
In which of the following machine, the work is usually rotated while the drill is fed into work?
Sensitive drilling machine
Radial drilling machine
Gang drilling machine
Deep hole drilling machine
Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known as
Cold shut
Swell
Sand wash
Scab
The angle on which the strength of the tool depends is
Rake angle
Cutting angle
Clearance angle
Lip angle
The hardness of a grinding wheel is specified by
Brinell hardness number
Rockwell hardness number
Vickers pyramid number
Letter of alphabet
The common welding error that occurs due to wrong speed, faulty preparation, and high / low current, improper electrode size is called?
Distortion
Warping
Porous weld
Poor fusion
The enlarging of an existing circular hole with a rotating single point tool is called
Boring
Drilling
Reaming
Internal turning
The maximum possible draft in cold rolling of sheet increases with the
Increase in coefficient of friction
Decrease in coefficient of friction
Decrease in roll radius
Decrease in roll velocity
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
Surface grinding is done to produce
Tapered surface
Flat surface
Internal cylindrical holes
All of these
The hard grade grinding wheels are denoted by the letters
A to H
I to P
Q to Z
A to P