The welding process used in joining mild steel shanks to high speed drills, is
Spot welding
Seam welding
Flash butt welding
Upset butt welding
Correct Answer :
C. Flash butt welding
Related Questions
Seam welding is a
Continuous spot welding process
Multi-spot welding process
Arc welding process
Process used for joining round bars
The metal is subjected to mechanical working for
Refining grain size
Reducing original block into desired shape
Controlling the direction of flow lines
All of these
A two high rolling mill consists of two rolls which rotate
At the same speed and in the same direction
At the same speed but in opposite direction
At different speeds and in the same direction
At different speeds and in the opposite direction
Galvanising is a
Zinc diffusion process
Process of coating zinc by hot dipping
Process used for making thin phosphate coating on steel
None of the above
In a hot chamber die casting machine
Ferrous alloys with low melting temperature are casted
Ferrous alloys with high melting temperature are casted
Nonferrous alloys with low melting temperature are casted
Nonferrous alloys with high melting temperature are casted
A jolt machine is used to
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
Ram the sand harder at the back of the mould and softer on the pattern face
Produce uniform sand hardness throughout the mould
Produce uniform packing of sand in the mould
In order to deliver molten metal from pouring basin to gate, a ________ is used.
Riser
Sprue
Core
None of these
The cold chisels are made by
Drawing
Rolling
Piercing
Forging
A rip saw
Is a two man saw
Is used for cutting along the grains of wood
Has a narrow blade with two wooden handles
All of the above
An oxidising process used for aluminium and magnesium articles is called
Galvanising
Anodising
Parkerising
Sherardizing
The operation of bending a sheet of metal along a curved axis, is known as
Plunging
Notching
Slitting
Forming
The welding process used to join the ends of two pipes of uniform cross-section, is
Spot welding
Seam welding
Projection welding
Upset butt welding
In a centrifugal casting method
Core is made of sand
Core is made of ferrous metal
Core is made of nonferrous metal
No core is used
Notching is the operation of
Cutting a sheet of metal in a straight line along the length
Removal of metal to the desired shape from the edge of a plate
Cutting a sheet of metal through part of its length and then bending the cut portion
Bending a sheet of metal along a curved axis
In backhand welding, the angle between the welding rod and the work is ________ as compared to forehand welding.
Same
Less
More
None of these
Extrusion
Is extensively used for making bolts and nuts
Is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work
Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
A ring gauge is used to
Check the diameter of shafts or studs
Test the accuracy of holes
Check the clearance between two mating surfaces
All of the above
The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as
Drawing
Squeezing
Coining
Planishing
Which of the following welding process uses non-consumable electrodes?
TIG welding
MIG welding
Manual arc welding
Submerged arc welding
For cutting brass, the hacksaw blade should have __________ teeth per 25 mm.
14
24
32
40
Blanking and piercing operations can be performed simultaneously in a
Simple die
Progressive die
Compound die
Combination die
The diaphragm moulding machine is used to
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
Ram the sand harder at the back of the mould and softer on the pattern face
Produce uniform packing of sand in the mould
Give uniform sand hardness throughout the mould
The electrodes used in spot welding have a tip of
Stainless steel
Aluminium
Copper
Brass
The chisel used for cutting key ways is
Flat chisel
Cape chisel
Round nose chisel
Diamond pointed chisel
If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be
10 mm/m
16 mm/m
20 mm/m
26 mm/m
Carburising flame is used to weld
Steel, cast iron, copper, aluminium etc
Brass and bronze
Hard surfacing materials such as stellite
All of these
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately
42 mm
44 mm
46 mm
48 mm
Neutral flame is used to weld
Steel
Cast iron
Copper
All of these
The maximum flame temperature occurs
At the outer cone
At the inner cone
Between the outer and inner cone
At the torch tip
A casting defect which results in general enlargement of a casting is known as
Shift
Sand wash
Swell
Scab