| Post Name | TRADESMAN (WELDING) |
|---|---|
| Department | TECHNICAL EDUCATION |
| Question Paper Code | 147/2014 |
| Date of Test | 5 September 2014 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Which non-ferrous metal is reddish in colour ?
Answer
D. Copper
2
Argon gas cylinder is painted with _
Answer
A. Blue colour
3
Which metal has highest melting point ?
Answer
A. Tungsten
4
Which one of the welding machines given below can be used for both AC and DC
welding 7?
Answer
D. Welding rectifier
5
Which one is suitable for resistance welding ?
Answer
D. Spot Welding
6
Ibis the distance between Electrode and base metal while welding is called ;
|
Answer
C. Arc Length
7
The energy source of Thermit Welding ts -
Answer
B. Chemical Energy
8
State the nozzle size you will select to weld a 3.15 mm thick mild steel sheet :
|
Answer
C. c) 7
9
The measuring instrument used in resistance :
Answer
D. Ohm meter
|
A 3
|P.T.O.}
10
Which are the two metals contained in a solder ?
Answer
A. Tin and Lead
11
Rectifier is used for converting .
Answer
D. AC to DC
12
To which terminal of the D.C machine the electrode cable is connected in straight
polarity ?
Answer
B. Negative
13
All oxygen regulator connection has ______ threaded.
Answer
B. Right hand
14
How much current you will set for 4 MM@ medium coated mild steel electrode ?
Answer
C. 150 to 170 amp
15
What is the percentage carbon present in mild steel 7
Answer
A. 0.15 to 0.3%
16
A_____ Flame is recommended when preheating of oxy-acetylene cutting method.
Answer
B. Neutral
17
Boiling point of Oxygen “3
Answer
C. —182.9°C
18
The frequency of AC is Cycle/ second.
|
Answer
B. 50
19
Name the heat treatment process used to improve softness and ductility in mild steel :
Answer
Question Cancelled
20
What should be the distance between the tip of the cutting nozzle from the top surface of the
plate to be cut ?
Answer
A. 5mm
21
The substances through which electricity does not pass are called __
Answer
B. Insulators
22
The function of a gas regulator is to ______.
Answer
D. set the working pressure
23
Which weld defect occurs on a lap fillet joint due to improper weaving of the electrode in the
covering tun ?
Answer
C. Edge of plate melted off |
24
is the distance between the end of this contact tube and the tip of the electrode in
MIG/MAG Welding.
Answer
D. Stick Out
25
A chemical powder or paste used to dissolve oxide is called :
Answer
C. Flux
26
The coating factor used to make medium coated electrode is ,
Answer
A. 14to15
27
Which type of flame is used for welding aluminium ?
Answer
A. Strictly neutral flame
28
What is the maximum length of a stub end as per standard ?
Answer
C. 40t050mm =
29
The percentage of carbon in acetylene gas is
Answer
B. 92%
30
The size of the nozzle to be selected for gas welding process varies accordingtothe ss ,
Answer
A. thickness of metal
31
What defect is caused by gas entrapment in arc welding process ?
Answer
D. Porosity
32
The angle of blow pipe to the line of weld in leftward welding technique is -
Answer
C. 60 to 70°
33
What is the name of the unit of a TIG welding machine which helps to strike the are without
touching the electrode with the base metal ?
Answer
B. High frequency unit
34
Standared size of flux coated electrode length is :
Answer
A. 350 mm, 450 mm
35
What is the melting point of aluminium ?
Answer
C. 659°C
36
The colour of Oxygen cylinder is
Answer
B. Black
37
A groove or channal formed in the parent metal at the toe of the weld is called :
Answer
A. Undercut
38
Name the power source suitable for welding aluminium in TIG welding :
Answer
A. AC welding machine
39
a9), in this joint the edges of thin sheets to be joined are folded, hooked together and
then pressed to form a joint.
Answer
D. Seaming
40
The process of hammering of the weld metal immediately after it is deposited is called :
Answer
C. Peening
41
What is the temperature range of oxy-acetylene flames ?
Answer
A. 3100 to 3300°C
42
When the arc and molten metal deviate from their regular path due to magnetic disturbances,
it is called as _ 3 .
Answer
A. Are blow
43
For removing water vapour from acetylene gas the material used is :
Answer
D. Pumic stone
44
Which flux is suitable for welding brass by gas welding ?
Answer
C. Borax flux
45
What is the purpose of copper coating on the mild steel filler rods ?
Answer
B. To avoid rusting of mild steel filler rod during long storage
46
The welding position of weld is defined by two parameters :
Answer
D. Weld slope and weld rotation
47
The type of electrode used for welding aluminium by TIG welding process is oo
Answer
B. Zirconiated tungsten electrode
48
What step will eliminate the undercut defect in arc welding 7
Answer
Question Cancelled
49
In manual metal arc welding the flux coating is to give deep penetration characteristics
would contain :
Answer
A. Cellulose
50
What is the melting temperature of copper ? |
Answer
D. 1083°C |
51
oi. Oxygen is __ __..
Answer
B. Supporter of Combustion
52
_ __s“ Flame is used in Oxy-acetylene gas welding of brass.
Answer
C. Oxidizing
53
Purpose of using Jigs and Fixtures of clamps for holding work in welding is to prevent :
Answer
B. Distortion
54
Gas is generated by the reaction of water and calcium carbide.
Answer
B. Acetylene
55
Which one of the following metals has highest thermal conductivity ?
Answer
D. Copper
56
Some metal particles which are thrown out of the arc during welding along with the weld
are called :
Answer
C. Spatters
57
Name the non-destructive test in which sound waves of high frequency are used :
Answer
B. Ultrasonic test
58
The angle of filler rod to the work in rightward welding technique in gas welcling is :
Answer
D. 30 - 40°
59
The root opening on square butt welding is given :
Answer
A. To obtain penetration
60
There are two methods by which flux coating is applied on the electrode core wire which are
they ?
Answer
B. Dipping and Extrusion
61
In an acetylene cylinder the acetylene is dissolved in :
Answer
C. Acetone
62
Depression formed at the end of weld bead is called :
Answer
B. Crater
63
Which one of the following is a radiographic test ?
Answer
A. X-ray test
64
Oxy - Acetylene flame cutting process is :
Answer
B. Chemical
65
For complete combustion one volume of acetylene requires :
Answer
B. 2.5 Volume of oxygen
66
The purpose of central hole in the tip of the cutting blowpipe is :
Answer
C. Supply of oxygen for cutting
67
On which of the following welding processes the arc is not visible to welder :
Answer
C. SAW
68
Columbium added electrode is used for welding stainless steel to prevent :
Answer
D. Weld Decay
69
The raw materials of Calcium Carbide are limestone and ________.
Answer
B. Coke
70
Depth of fusion from the surface of the weld metal is known as :
Answer
Question Cancelled
71
Stainless steel contains as alloying elements of :
Answer
C. Chromium and Nickel
72
In TIG Welding, the shielding gas used is :
Answer
A. Argon
73
In Oxy-Acetylene process supply of acetylene generator is called :
Answer
Question Cancelled
74
Flux is not required for gas welding of __ ,
Answer
C. Mild Steel
75
Which two gases from the atmosphere must be prevented from entering the weld metal ?
|
Answer
A. Oxygen and Nitrogen
76
Duty cycle of welding machine is :
Answer
Question Cancelled
77
The distance between the toe and root af the weld is called :
Answer
B. Leg length
78
Lack of penetration in Arc welding due to :
Answer
B. Low Current
79
What is the Chemical symbol of Acetylene ?
Answer
A. GH,
80
Which type of energy is used in Laser beam welding ?
Answer
A. Light energy
81
Where the Jawaharlal Nehru Tropical Botanic Garden (/NTBGRI) situated 7
Answer
D. Palode
82
Who among the following, resorted to guerilla warfare in the revolt of 1857 ?
Answer
A. Tantia Topi
83
R 83. The next ICC World Cup Cricket will be held at :
Answer
C. Australia and Newzealand
84
Who was popularly known as ‘Kerala Mopasang’ ?
Answer
B. Thakazhi Sivasankara Pillai
85
Who started “Pan thibhojanam’ (inter-dining) in Kerala ? |
Answer
D. Thycaud Ayya
86
Which city is popularly known as ‘Steel City’ ?
Answer
A. Jamshadpur
87
The apex level agency of ‘Kudumba Sree’ project in Kerala :
Answer
C. c) CDS
88
Which was the journal that functioned as the mouthpiece of 5 N D P ?
Answer
A. Yoganadam
89
Who is the present Chief Minister of Telangana ?
Answer
D. K. Chandrasekhara Rao
90
The founder of ‘Athma Vidhya Sangham’ :
Answer
B. Vagbhadanandan
91
Where did the sepoys break out in open revolt on May 10* 1857 ?
Answer
D. Meerut
92
The first president of Indian National Congress was :
Answer
C. W.C, Banerjee
93
Who discovered the south-western mansoon ?
Answer
B. Hippalus
94
The Arabean Sea and Persian Gulf are connected by the :
Answer
A. Hormuz Strait
95
Who has been chosen for the Jnanpeeth Award 2013 ?
Answer
D. Kedarnath Singh
96
Which Central Ministry conducts the census every 10 year ?
Answer
C. Home Ministry
97
Article 360 explains :
Answer
B. Financial Emergency
98
_ 98. Name the type of mosquito which spread Malaria :
Answer
A. Anopheles Mosquito
99
When the Second Round Table Conference held ?
Answer
B. 1931
100
In India the standard time is fixed on the basis of standard meridian which passes
through : |
Answer
D. Allahabad
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