| Post Name | TRADESMAN -WELDING - Technical Education |
|---|---|
| Question Paper Code | 020/2025 |
| Category Code | 136/2024 |
| Date of Test | 17 February 2025 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The correct point angle of a chisel depend on the :
Answer
D. Material to be chipped
2
Files are specified according to their :
Answer
C. Length, grade, cut and shape
3
Which part of a hammer is meant for fixing handle rigidly?
Answer
A. Eye hole
4
The ignition temperature of steel for oxy-acetylene gas cutting is :
Answer
D. 875 to 900 °C
5
The cutting nozzle size is given by the _________ of the cutting orifice in mm.
Answer
A. Diameter
6
Oxygen gas cylinders can store gas to a capacity of :
Answer
A. 7 m3
7
Acetylene gas is generated from :
Answer
B. Calcium carbide and water
8
Which oxy-acetylene welding flame is used for welding mild steel?
Answer
A. Neutral flame
9
The selection of flux in gas welding depends upon :
Answer
A. Composition of material to be joined
10
What is the special method for safe storage of acetylene gas in cylinder?
Answer
D. Stored as dissolved gas in liquid acetone
11
Low pressure blow pipe is also called :
Answer
C. Injector blow pipe
12
The angle of blow pipe to the line of weld in right ward welding technique?
Answer
D. 40 ° to 50°
13
Which one of the following is not a form of flux in gas welding?
Answer
A. Coil
14
Number of pin holes formed on the surface of the deposited metal is called
Answer
B. Porosity
15
Weldable type of cast iron is :
Answer
Question Cancelled
16
Which of the following is an advantages of high pressure system of gas welding?
Answer
A. Working efficiency is more
17
What is the first compartment contained in the purifier?
Answer
B. Pumice stone
18
The melting point of zinc :
Answer
A. 419 °C
19
Aluminium is classified in to _________ main groups.
Answer
C. 3
20
_________ is a groove or channel formed along the toe of the weld on one side or both
sides.
Answer
B. Under cut
21
What is the substance used as a coolant in spot welding ?
Answer
B. Water
22
Which one of the following is an example of resistance welding?
Answer
C. Spot welding
23
The fusion is produced by the heat obtained from a concentrated beam composed in
Electron Beam welding, primarily of :
Answer
D. High velocity of electrons
24
Which of the following resistance welding machine is used to join pipe sections in
end-to-end?
Answer
B. Butt welding
25
Which of the following operating variable in Submerged Arc welding controls the arc
length?
Answer
A. Welding voltage
26
Which of the following is not an advantage of resistance welding?
Answer
B. The equipment is costly
27
Which one of the following property of flux is used in Electro Slag welding?
Answer
A. It has high electrical resistance
28
The reaction takes place in thermit welding is :
Answer
B. Exothermic
29
In thermit welding heat is produced between _________ and iron oxide in right
proportion.
Answer
D. Aluminium powder
30
Which is an advantage of Friction welding?
Answer
C. No filler rod or electrode is required
31
Which of the following statement is/are correct about Laser Beam welding?
(i) A single frequency light beam is used
(ii) The light energy is put in to a single molecule of a substance (Ruby or CO2 ) to
create the beam
(iii) This process is used for welding small light materials
Answer
B. All of the above (i), (ii) and (iii)
32
The multi spot welding is :
Answer
A. Projection welding
33
Thermit welding is a form of :
Answer
C. Fusion welding
34
Which type of joint is required for spot welding?
Answer
C. Lap joint
35
Electron beam welding is an automatic process performed in _________ without a
shielding gas.
Answer
A. Vaccum
36
A welder qualification test is to verify :
Answer
B. Skill of the welder
37
WPS means?
Answer
B. Weld procedure specification
38
Which of the following destructive test is related to izod and charpy machines?
Answer
A. Impact test
39
The surface and sub-surface cracks in the weldment of magnetic alloys can be inspected
by :
Answer
D. Magnetic particle test
40
Guided bend test is used to determine ––––––––––– of the weld metal.
Answer
A. Ductility
41
The temperature of plasma arc cutting is:
Answer
A. 20000 ºK
42
Stainless steel can be cut easily by :
Answer
A. Plasma arc cutting
43
––––––––––– is done to build up worn out parts of material whose dimensions have been
affected and make them as good as new and obtain the required properties.
Answer
C. Surfacing
44
Which flame is used for hard facing?
Answer
B. Carburising
45
Post heating ––––––––––– the ratio of cooling of a welded joint.
Answer
C. Retards
46
A short arc will reduce :
Answer
A. Arc blow
47
The distance between the tip of the electrode and the parent metal where the arc strike
is called :
Answer
B. Arc length
48
Some time in electric arc welding, arc gives out more spatters it is due to :
Answer
A. High welding current
49
In the electrode coating ER4211, what does the ‘R’ Indicate :
Answer
A. Types of covering
50
The electrode, which deposits a more amount of weld metal per unit time is called :
Answer
B. Iron powder electrode
51
A device designed for checking the shape and size of welding is called :
Answer
B. Weld gauge
52
Welding transformers are equipped with condensers so as to improve :
Answer
A. Power factor
53
A depression formed at the end of the weld is called :
Answer
B. Crater
54
Electrode used for arc welding of aluminium contain 95% aluminium and :
Answer
A. 5% silicon
55
The process of hammering the weld metal immediately after it is deposited is called :
Answer
B. Peening
56
What is the name of semi-circular deposit on a weld bead?
Answer
A. Reinforcement
57
What is the name of joint if two members welded in the same plane?
Answer
C. Butt joint
58
What is the conversion function of a rectifier?
Answer
C. AC to DC
59
Which one of the following pipes welding stands for 45 º inclined position welding?
Answer
D. 6G
A 9 020/2025
60
What is the defined as vertical position of groove welding?
Answer
C. 3G
61
What is the purpose of wrapping the weld cable around the job in welding?
Answer
A. To control arc blow
62
When H2 control is specified for a manual metal arc welding project, the electrode would
normally?
Answer
D. Basic
63
For open site manual metal arc welding the following equipment is available. Which
would you choose for safe working?
Answer
D. Diesel engine driven motor generator
64
Silicon is added to electrode coating as :
Answer
C. A de-oxidant
65
When welding thin plate distortion can be minimised by?
Answer
D. Using back step welding
66
What is the non-consumable electrode of high melting point used in TIG welding?
Answer
C. Tungsten electrode
67
How heat affected zone is covered and protected from atmospheric contaminations in
GTAW?
Answer
A. Inert gas
68
Which type of tungsten electrode is suitable for welding stainless steel by TIG process
with DC ?
Answer
C. Thoriated tungsten electrode
69
Which type of current supply is best suited for GTAW of aluminium and its alloys?
Answer
A. AC
70
What is the defect while TIG welding if the current is too low?
Answer
D. Lack of fusion
71
What is the name electronic unit that helps to initiate the arc in TIG welding process?
Answer
C. High frequency unit
72
Which one is added with tungsten to increase the current carrying capacity in TIG
welding?
Answer
A. Thorium oxide
73
State the reason for using an AC power source in the TIG welding process while welding
aluminium :
Answer
A. It clean aluminium oxide
74
TIG welding nozzles are made by :
Answer
D. Ceramic
75
Colour identification of tungsten with 2% thorium TIG electrode is :
Answer
B. Red
76
In following gases which one is recommended for welding of steel?
Answer
Question Cancelled
77
Stainless steel is mostly welded by TIG welding in :
Answer
A. DCSP
78
EWP “E” stands for an :
Answer
A. Electrode
79
ISO Stands for :
Answer
A. International organization for standardization
80
Which shielding gas will produce smooth arc in TIG welding?
Answer
B. Argon
81
What is also referred as a GTAW?
Answer
A. TIG welding
82
Argon gas backing is called for when TIG welding austenitic stainless steel pipe this
is to :
Answer
A. Prevent oxidation
83
In current/polarity used for TIG welding of all materials except aluminium and
magnesium is :
Answer
Question Cancelled
84
Pipe bores of some materials must be purged with argon before and during TIG welding
in order to :
Answer
C. Prevent oxidation of the root bead
85
In TIG welding what is the benefit of a current slope out device? It reduce :
Answer
B. Risk of crater cracking
86
Which one of the following is most commonly used power supply for GMAW?
Answer
B. DCEP
87
The electrode extended from the end of the contact tip of the welding gun to the arc is
called :
Answer
D. Stick out
88
There are four modes of metal transfer in GMAW, which one is considered least
desirable?
Answer
A. Globular
89
What is the name of welding process if the arc produced by a consumable metal electrode
is protected by inert gas?
Answer
B. MIG welding
90
The other name of CO2 welding is :
Answer
A. Metal active gas welding
91
Contact tip of GMAW torch is made by :
Answer
B. Copper
92
In the GMAW electrode specification ER70 S-6, “S” stands for :
Answer
D. Solid
93
The rate at which the arc moves along the joints is known as :
Answer
D. Arc travel speed
94
What will be increases when you are increasing the wire feed speed in GMAW?
Answer
B. Welding current
95
The drawback of CO2 shielding in GMAW is :
Answer
A. More spatters
96
Which is used to reduce the cylinder pressure and made to working pressure?
Answer
B. Gas pressure regulator
97
CO2 is extensively used for welding :
Answer
C. Mild steel
98
A suitable gas/gas mixture for GMAW for aluminium is :
Answer
B. 100% Argon
99
For GMAW the burn off rate of the wire is directly related to :
Answer
B. Wire feed speed
100
The arc length is most likely to be affected by what during CO2 welding :
Answer
Question Cancelled
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