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Quiz 11
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Q.1
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
Q.2
The trade name of a nonferrous cast alloy composed of cobalt, chromium and tungsten is called
Ceramic
Stellite
Diamond
Cemented carbide
Q.3
For generating a Coon’s 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
Q.4
Crater wear occurs mainly on the
Nose part, front relief face and side relief face of the cutting tool
Face of the cutting tool at a short distance from the cutting edge only
Cutting edge only
Front face only
Q.5
Flank wear occurs mainly on the
Nose part, front relief face and side relief face of the cutting tool
Face of the cutting tool at a short distance from the cutting edge
Cutting edge only
Front face only
Q.6
The aluminium oxide abrasive is chiefly used for grinding
High speed steel
Carbon steel
Wrought iron
All of these
Q.7
In machining metals, surface roughness is due to
Feed marks or ridges left by the cutting tool
Fragment of built-up edge on the machined surface
Cutting tool vibrations
All of these
Q.8
For turning internal tapers, the suitable method is
By a form tool
By setting over the tail stock
By a taper turning attachment
By swiveling the compound rest
Q.9
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
Q.10
The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is
1.02
1.32
1.66
1.82
Q.11
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 swiveling the compound rest
Q.12
In oblique cutting system, the maximum chip thickness
Occurs at the middle
May not occur at the middle
Depends upon the material of the tool
Depends upon the geometry of the tool
Q.13
The negative rake is usually provided on
High carbon steel tools
High speed steel tools
Cemented carbide tools
All of these
Q.14
The grinding wheel speed (surface speed in m/min) usually varies from
500 to 1000
1000 to 1500
1500 to 2000
2000 to 2500
Q.15
Which one among the following welding processes uses non-consumable electrode?
Gas metal arc welding
Submerged arc welding
Gas tungsten arc welding
Flux coated arc welding
Q.16
What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
Thermit welding
Electroslag welding
Resistance welding
Submerged arc Welding
Q.17
What is the method of brazing used to join relatively small assemblies made from materials that either do not oxidize at the brazing temperature or can be protected from oxidation with a flux?
Torch brazing
Dip brazing
Resistance brazing
Furnace brazing
Q.18
Hardness of steel greatly improves with
Annealing
Cyaniding
Normalizing
Tempering
Q.19
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.20
Side rake angle of a single point cutting 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 the tool
Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Q.21
The lathe spindles at the nose end have
Internal screw threads
External screw threads
No threads
Tapered threads
Q.22
The broaching operation in which either the work or the tool moves across the other, is known as
Pull broaching
Push broaching
Surface broaching
Continuous broaching
Q.23
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.24
In an orthogonal cutting, the depth of cut is halved and the feed rate is double. If the chip thickness ratio is unaffected with the changed cutting conditions, the actual chip thickness will be
Doubled
Halved
Quadrupled
Unchanged
Q.25
A hole is of dimension φ = 9 ₊0⁺⁰∙⁰¹⁵ mm. The corresponding shaft is of dimension φ = 9 ₊0.001⁺⁰∙⁰¹⁰ mm. The resulting assembly has
Loose running fit
Close running fit
Transition fit
Interference fit
Q.26
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.27
A lead-screw with half nuts in a lathe, free to rotate in both directions has
V-threads
Whitworth threads
Buttress threads
Acme threads
Q.28
The height of each tooth of a broach is
Same throughout
In progressively decreasing order
In progressively increasing order
None of these
Q.29
If the cutting speed is increased, then the built-up-edge
Becomes longer
May or may not form
Becomes smaller and finally does not form at all
Has nothing to do with speed
Q.30
For softer materials, the point angle of the drill is kept
Equal to 118°
Less than 118°
More than 118°
Any one of these
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