| Post Name | JUNIOR INSTRUCTOR (SHEET METAL WORKER) (Industrial Training) |
|---|---|
| Question Paper Code | 014/2025 |
| Category Code | 664/2023 |
| Date of Test | 29 January 2025 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The property of a material which enables it to draw out into thin wire is called :
Answer
B. Ductility
2
What is the carbon percentage of cast iron?
Answer
D. 2% to 4%
3
The carbon percentage of medium carbon steel is :
Answer
A. 0.3% to 0.6%
4
Bronze is an alloy of :
Answer
C. Copper and Tin
5
The melting point of Zinc is :
Answer
B. 420Β°C
6
The specific gravity of lead is :
Answer
D. 11.36
7
The hot rolled steel flats are designated by :
Answer
A. Width (mm) and Thickness (mm)
8
The Indian standard steel plates are designated by :
Answer
C. Length (mm) Γ Width (mm) Γ Thickness (mm)
9
The steel square bars are designated by :
Answer
D. Symbol and Side Width (mm)
10
The hexagon and octagon steel rods are designated by :
Answer
B. Symbol and Width across flat
11
The colour of Hot rolled black iron sheet is :
Answer
C. Bluish Black
12
The colour of Cold rolled black iron sheet is :
Answer
A. Plain Silver Whitish
13
Reading accuracy of the steel rule is :
Answer
B. 0.5 mm
14
Tinmanβs βLβ square is used to :
Answer
A. Check perpendicularity
15
Odd leg caliper is used for :
Answer
A. Marking lines parallel to the inside and outside edges
16
From the following which one is used for measuring thickness of sheet metal and wire
diameter :
Answer
C. Standard wire gauge
17
Vernier caliper is used to measure upto an accuracy of :
Answer
D. 0.02 mm
014/2025 4 A
18
For drawing clear lines on sheet metals, working point of scriber is ground at an
angle of :
Answer
A. 10Β° to 20Β°
19
βLβ square is specified by :
Answer
C. Both
20
Least count of vernier bevel protractor is :
Answer
B. 5'
21
___________ is used to check squareness and flatness of a workpiece.
Answer
A. Try square
22
From the following which one is used for scribing arcs and circles and stepping off
distances?
Answer
B. Divider
23
Use of centre punch is :
Answer
A. Good seating for starting the drill
24
In metric micrometer, pitch of the spindle thread is ___________ mm.
Answer
D. 0.5 mm
25
Cutting angle of snips is :
Answer
C. 87ΒΊ
26
Which shears is used for cutting eyeholes in sheet metal?
Answer
Question Cancelled
27
Which materials is used to make Hacksaw blade?
Answer
D. High speed steel
28
What is an operation of removing excess metal layer by layer with the help of chisel and
hammer?
Answer
C. Chipping
29
Which file is used for filing narrow grooves and angles above 10ΒΊ?
Answer
A. Knife edge file
30
Which punch is used for punching holes upto 12 mm dia in edges of thin sheet metal?
Answer
D. Iron hand punch
31
Which part of the drill measured for its diameter?
Answer
D. Margin
32
Which is used to align and drive the hand tap correctly into the hole to be threaded?
Answer
C. Tap wrench
33
The weight of an engineerβs hammer, normally used for marking purpose is :
Answer
B. 250 g
34
What is the name of hammer that is like a creasing hammer, but its peen ends are
blended?
Answer
D. Stretching hammer
35
Which stakes has two arms and its both ends, one is usually cranked downwards and
square holes?
Answer
C. Tinmanβs horse
36
Which type of vice consists of handle and small collect chuck at one end?
Answer
B. Pin vice
37
The width of Groover is 6 mm and sheet thickness is 0.5 mm. What is the width of fold in
locked grooved seam?
Answer
C. 4.5 mm
38
What is the width of the capping strip of double grooved seam?
Answer
D. 2 times width of folded edge + 4 times sheet thickness
39
Which seam is use when joining a collar to a flange without using solder, screws or
rivets?
Answer
A. Plain dovetailed seam
40
What is one of the folded joint and is used in light articles such as toys?
Answer
D. Stake joint
41
Other name of Pittβs burgh seam is
Answer
C. Hammer lock seam
42
How many types of wiring process followed in sheet metal work?
Answer
A. 2
43
What is called if sheet metal edge is folded to 180Β°?
Answer
B. Single hem
44
Curling is
Answer
D. Edge stiffening process
45
In drawing operation, when using the formula β(dΒ² + 4dh), d denotes:
Answer
D. Diameter of product
46
In Triangulation development method, the true lengths are related to :
Answer
B. Vertical height
47
In spinning operation, which is used to form the neck of a vessal after initial drawing :
Answer
B. Core die
48
The average overall length of the hand forming tool in spinning is :
Answer
A. 750 - 850 mm
49
In blanking operation, the blank is governed by the size of :
Answer
C. Die
50
In press forming operation, the octagonal shaped hold is produced by :
Answer
B. Piercing
51
In which operation does the spring back effect occur?
Answer
B. Angle forming operation
52
The pressure pad avoids the formation of wrinkle formed while :
Answer
A. Drawing
53
Which hammer is used to remove the dents from deep hollow portions?
Answer
A. Bullet hammer
54
Which process is used to make 50 numbers circular holes in a metal sheet at 20 mm
spacing length wise and cross wise?
Answer
B. Perforating
55
Which development method is used for making segmental quarter bend?
Answer
A. Parallel line method
56
How to calculate the arc length in geometrical construction method?
Answer
D. 2Ο r Γ ΞΈ ο― / 360
57
In wire notching work, the notch is started is :
Answer
A. 3.5 times Ο of wire
58
Straight line cutting along the length is called :
Answer
A. Slitting
59
The main advantage of nibbling over shearing is that there is :
Answer
C. Less distortion of work
60
In medium and heavy plate bending process, the angle of male punch is :
Answer
D. 60ΒΊ
61
The face is square in shape and peen is round and polished. This type of hammer is
known as :
Answer
C. Planishing hammer
62
Which is used for cutting along straight line and convex cutting of sheet metals?
Answer
C. Hand lever shear
63
Which development method is used for making transformer type connectors?
Answer
C. Triangulation method
64
Which development method is used for making concentric reducer connectors?
Answer
B. Radial line method
65
What is the cutting speed of high speed steel drill, for drilling high tensile steel?
Answer
B. 5 - 8 m/min.
66
What is the cutting radius of light power shear type nibbler?
Answer
D. 10 mm
67
In punch type nibbler the maximum linear cutting speed is approximately :
Answer
A. 1.8 m/min.
68
Which one is not a part of bar folder?
Answer
B. Excentric shaft
69
Bar folder is specified by :
(i) Maximum length of bed
(ii) Thickness of the work piece that can be bend
(iii) Smallest width of bend
(iv) Minimum inside corner radius
Answer
A. Only (i) and (ii)
70
Channel die used in press brake are only successful upto :
Answer
C. 2.64 mm
71
Which one of the statements is/are correct about pyramid type roll forming machine?
(i) Heavy gauge sheet and plate are formed
(ii) The rollers are placed like a pyramid
(iii) Lower roller adjusted to up and down to make bent radius
(iv) The machines are generally driven by hand
Answer
C. Only (i) and (ii)
72
If the seam is to be made from inside of the object, what is the arrangement of horn and
type of roller used in seam closing machine?
Answer
A. Grooved surface of horn on top and flat roller is used
73
What is the centre to back dimension of a deep back fly press?
Answer
D. Maximum about 310 mm
74
Which of the statement is/are correct about blanking?
(i) Size of blank is governed by size of punch
(ii) Metal cut out is the required component
(iii) Clearance is left on the die
Answer
B. Only (ii)
75
Which of the following buffing material is used to furnish or producing a high colour or
luster?
Answer
D. Rouge
76
What is the cause of spray painting defect, having heavy coat with ripples?
Answer
D. Gun is held too close to the panel
77
Which is the incorrect statement about riveting of two plates together?
Answer
C. Fullering is done on the edges of the plates as well as that of the rivet heads
78
During arc welding when the thickness of the metal to be welded increases :
Answer
A. voltage remaining the same, current should increase
79
What are the features of A.C. welding over D.C. welding?
(i) The cost of equipment is higher
(ii) It is less safe as the no-load voltage is high
(iii) The efficiency is higher due to the absence of rotating parts
Answer
D. (ii) and (iii)
A 11 014/2025
80
In oxyacetylene gas welding temperature produced is?
Answer
A. 3,200ΒΊC
81
Aluminium and Copper can be joined by brazing process when βββββββ alloy is
used.
Answer
B. Aluminium-silicon
82
βββββββ solders are used for glass-to-glass and glass-to-metal soldering.
Answer
D. Indium-tin
83
Which of the following method is not used for applying pressure in spot welding process?
Answer
A. Hand lever
84
In submerged arc welding, the arc is struck between
Answer
C. Consumable bare electrode and work piece
85
Two plates, each of 6 mm thickness, are to be butt-welded. Consider the following
processes and select the correct sequence in decreasing order of size the heat affected
zone.
(i) Arc welding
(ii) MIG welding
(iii) Laser beam welding
(iv) Submerged arc welding
Answer
D. (i)-(iv)-(ii)-(iii)
86
In tungsten inert gas welding (GTAW) which polarity is used for welding Aluminium?
Answer
C. Alternating Current
87
Which of the following is not a part of water jet machining system?
Answer
A. Transducer
88
Which of the following statements are TRUE for Plasma Arc Cutting (PAC) process?
(i) Sources of heat generation in PAC is recombination of ions and electrons into
atoms and/or recombination of atoms into molecules.
(ii) PAC can be used to cut any material having high thermal conductivity, high heat
capacity and good oxidation resistance.
(iii) PAC cannot be used to cut the materials which cannot be cut by ordinary methods
like oxy-fuel cutting.
(iv) Very high temperature about 20,000ΒΊ
Answer
C. 30,000ΒΊC is reached during PAC.
89
In which surface preparation method the solvent white spirit, carbon tetra chloride and
trichloroethylene is used?
Answer
B. degreasing
90
What is the type of surface protection by coating lubricating oil and grease?
Answer
A. temporary treatment
91
A Bent snip is used for
Answer
B. Cutting the sheet along the curved line
92
A process in which the edge of the sheet is folded over itself to increases the stiffness of
the part, is called
Answer
B. Hemming
93
Which screw thread of 55ΒΊ included angle and depth of thread is 0.6403 p is used in
general engineering fasteners?
Answer
D. BSW thread
94
A screw driver is specified by its
Answer
D. Width of tip and length of the blade
95
Which type of hammer is used in repairing vehicle body to be heated and reshaped?
Answer
C. Top circular and bottom square faced hammer
96
Device which controls temperature in window AC is :
Answer
A. Thermostat
97
Connecting rods are generally manufactured by
Answer
B. forging
98
Insulation material used in electric iron is :
Answer
C. mica
99
An electric locomotive gets its power from :
Answer
B. Overhead pantograph
100
The systematic approach for maintenance is :
Answer
D. Problem - Cause - Diagnosis - Rectification
ββββββββ
014/2025 14 A
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