Which of the following welding process uses non-consumable electrodes?
TIG welding
MIG welding
Manual arc welding
Submerged arc welding
Correct Answer :
A. TIG welding
Related Questions
A basic hole is one whose
Lower deviation is zero
Upper deviation is zero
Lower and upper deviations are zero
None of these
Most of the oxyacetylene welding is done with
Neutral flame
Oxidising flame
Carburising flame
All of these
Seam welding is best adopted for metal thickness ranging from
0.025 to 3 mm
3 to 5 mm
5 to 8 mm
8 to 10 mm
The surface to be machined is marked on the pattern by
Red colour
Yellow colour
Black colour
Blue colour
For welding plates of thickness less than 5 mm, its edges
Do not require bevelling
Should be bevelled to a single-V or U-groove
Should have a double-V or U-groove on one side
Should have a double-V or U-groove on both sides
The draft or taper allowance on casting is generally
1 to 2 mm/m
2 to 5 mm/m
5 to 10 mm/m
10 to 15 mm/m
For gas welding, the pressure desired at the welding torch for oxygen is
7 to 103 kN/m²
70 to 280 kN/m²
280 to 560 kN/m²
560 to 840 kN/m²
In electric resistance welding, pressure applied varies from
1 to 5 MPa
5 to 10 MPa
10 to 25 MPa
25 to 55 MPa
Piercing is an operation of cutting
A cylindrical hole in a sheet of metal by the punch and the die
A hole (other than cylindrical) in a sheet of metal by the punch and the die
A flat sheet to the desired shape
A number of holes evenly spaced in a regular pattern on a sheet of metal
Which of the following statement is wrong?
The angular clearance on dies varies from 0.5° to 1°
In drawing operation, the metal flows due to plasticity
In press operation, the size of the pierced hole is independent of the size of punch
None of the above
Shift is a casting defect which
Results in a mismatching of the top and bottom parts of a casting
Results in general enlargement of a casting
Occurs near the ingates as rough lumps on the surface of a casting
Occurs as sand patches on the upper surface of a casting
When the file is moved to and fro over the work, it is known as
Cross filing
Draw filing
Pull and push filing
None of these
Blanking and piercing operations can be performed simultaneously in a
Simple die
Progressive die
Compound die
Combination die
In a _________, the molten metal is poured and allowed to solidify while the mould is revolving.
Die casting method
Slush casting method
Permanent mould casting method
Centrifugal casting method
In order to check the clearance between two mating surfaces, a ________ gauge should be used.
Ring
Plug
Feeler
None of these
In shielded arc welding
Large electrode is used
Welding rod coated with slag is used
Welding rod coated with fluxing material is used
None of the above
Which of the following welding method uses a pool of molten metal?
Carbon arc welding
Submerged arc welding
TIG arc welding
MIG arc welding
In a ________, two or more operations are performed simultaneously at the single stroke of the ram.
Simple die
Progressive die
Combination die
Compound die
The centrifugal casting method, is used for casting articles of
Symmetrical shape about vertical axis
Symmetrical shape about horizontal axis
Irregular shape
Nonferrous metal only
A file removes the metal during
Forward stroke
Return stroke
Both forward and return strokes
None of these
In backhand welding, the angle between the welding rod and the work is ________ as compared to forehand welding.
Same
Less
More
None of these
The cross-section of a chisel is usually
Rectangular
Square
Hexagonal
Octagonal
The process of decreasing the cross-section of a bar and increasing its length, is called
Drawing down
Upsetting
Spinning
Peening
The electrodes used in spot welding have a tip of
Stainless steel
Aluminium
Copper
Brass
A hacksaw blade cuts on the
Forward stroke
Return stroke
Both forward and return strokes
Cutting depends upon the direction of force
Thermit, used in Thermit welding, is a mixture of
Charcoal and iron oxide
Charcoal and aluminium
Iron oxide and aluminium
Charcoal, iron oxide and aluminium
When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.
Neutral
Oxidising
Carburising
None of these
Scribing block is used to
Hold the round bars during marking
Check the trueness of flat surfaces
Locate the centres of round bars
Check the surface roughness
In blanking operation, the clearance is provided on
Punch
Die
Half on the punch and half on the die
Either on punch or die depending upon designer's choice
In piercing operation, the clearance is provided on
Punch
Die
Half on the punch and half on the die
Either on punch or die depending upon designer's choice