Q.1
Projection welding is a
Q.2
In shielded arc welding
Q.3
The cold chisels are made from
Q.4
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
Q.5
The maximum flame temperature occurs
Q.6
The temperature produced by oxy-hydrogen flame is about
Q.7
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
Q.8
Swab is used for
Q.9
The shrinkage allowance for cast iron pattern is
Q.10
The advantage of Thermit welding is that
Q.11
When the dimension is expressed as 20­ -0.025 ⁺⁰∙⁰³⁵, then the basic size is
Q.12
Cast iron and steel pipes are produced by
Q.13
Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes?
Q.14
In arc welding, the temperature of heat produced by the electric arc is of the order of
Q.15
The adhesiveness is the property of sand due to which
Q.16
Seam welding is a
Q.17
Aluminium is the best material for making patterns because it is
Q.18
In submerged arc welding, an arc is produced between a
Q.19
Rotary swaging
Q.20
When a pattern is made in three parts, the top part, is known as a
Q.21
An oxidising process used for aluminium and magnesium articles is called
Q.22
The type of file used for a wood work is
Q.23
The increase in hardness due to cold working, is called
Q.24
A mortise gauge is a
Q.25
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
Q.26
In electric resistance welding, pressure applied varies from
Q.27
A zinc diffusion process is called
Q.28
The property of sand due to which it evolves a great amount of steam and other gases is called
Q.29
The sand used for making cores is
Q.30
Piercing is an operation of cutting
Q.31
For gas welding, the pressure desired at the welding torch for oxygen is
Q.32
In a four high rolling mill, there are four rolls out of which
Q.33
A two high rolling mill consists of two rolls which rotate
Q.34
In ________ welding, the weld may be made either from left to right or from right to left.
Q.35
The surface to be left unmachined is marked on the pattern by
Q.36
The surface to be machined is marked on the pattern by
Q.37
A taper provided on the pattern for its easy and clean withdrawal from the mould is known as
Q.38
Blanking and piercing operations can be performed simultaneously in a
Q.39
A file with 20 teeth in 25 mm is called
Q.40
For welding plates of thickness less than 5 mm, its edges
Q.41
The accuracy of micrometers, calipers, dial indicators can be checked by a
Q.42
The metal extrusion process is generally used for producing
Q.43
The flux commonly used in brazing is
Q.44
The centrifugal casting method, is used for casting articles of
Q.45
A casting defect which results in general enlargement of a casting is known as
Q.46
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
Q.47
The operation of cutting a sheet of metal in a straight line along the length, is known as
Q.48
The metal is subjected to mechanical working for
Q.49
In die casting, machining allowance is
Q.50
In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.
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