Q.1
The temperature of oxy-hydrogen flame is ________ oxyacetylene flame.
Q.2
The cross-section of a chisel is usually
Q.3
Cores are used to
Q.4
The welding process used to join the ends of two pipes of uniform cross-section, is
Q.5
Which of the following statement is wrong?
Q.6
The cold working of metals is carried out
Q.7
The consumable electrode is used in
Q.8
During drawing operation, the states of stress in cup would include
Q.9
The parts of circular cross-section which are symmetrical about the axis of rotation are made by
Q.10
The recrystallisation temperature of steel is
Q.11
The teeth of hacksaw blade are bent
Q.12
The hot working of metals is carried out
Q.13
In a gas welding of mild steel using an oxyacetylene flame, the total amount of acetylene consumed is 10 litres. The oxygen consumption from the cylinder is
Q.14
Which of the following welding process uses non-consumable electrodes?
Q.15
The operation of bending a sheet of metal along a curved axis, is known as
Q.16
The oxyacetylene gas used in gas welding produce a flame temperature of
Q.17
In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
Q.18
The electron beam welding can be carried out in
Q.19
In sheet metal work, he cutting force on the tool can be reduced by
Q.20
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
Q.21
Structural sections such as rails, angles, I-beams are made by
Q.22
A hacksaw blade cuts on the
Q.23
In average work, the tolerance produced by investment casting method is
Q.24
In blanking operation, the clearance is provided on
Q.25
V-block is used to
Q.26
In piercing operation, the clearance is provided on
Q.27
The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
Q.28
A moving mandrel is used in
Q.29
The brass and bronze are welded by _________ flame.
Q.30
A gimlet is a ________ tool.
Q.31
The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)
Q.32
Which of the following statement is wrong?
Q.33
In TIG arc welding, the welding zone is shielded by an atmosphere of
Q.34
In sheet metal blanking, shear is provided on punches and dies so that
Q.35
Which of the following statement is wrong?
Q.36
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately
Q.37
The diaphragm moulding machine is used to
Q.38
In a centrifugal casting method
Q.39
The temperature of the inner luminous cone of neutral flame is about
Q.40
The acetylene cylinder is usually painted with
Q.41
The oxygen cylinder is usually painted with
Q.42
In order to deliver molten metal from pouring basin to gate, a ________ is used.
Q.43
In welding magnesium with TIG arc welding, direct current with ________ is used.
Q.44
Thermit, used in Thermit welding, is a mixture of
Q.45
For welding plates of thickness more than 12.5 mm, its edges
Q.46
A rip saw
Q.47
For smoothing and cleaning out depressions in the mould, a ________ is used.
Q.48
In order to produce uniform packing of sand in the moulds, a _________ is used.
Q.49
A jolt machine is used to
Q.50
In order to ram the sand harder at the back of the mould and softer on the pattern face, a ________ is used.
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