| Post Name | TRADESMAN - MOULDING /FOUNDRY |
|---|---|
| Department | TECHNICAL EDUCATION DEPARTMENT |
| Question Paper Code | 060/2024 |
| Category Code | 424/2023 |
| Date of Test | 17 May 2024 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Safety precautions to be observed while working on a machine are :
(1) Measurement can be taken when machines are running.
(2) Stop machine before changing speed.
(3) Tool and workplace can be adjusted when power is on.
(4) Don’t attempt to operate machine until you know to operate it properly.
Answer
B. (2) and (4) correct
2
Full form of PPE in safety is :
Answer
C. Personal Protective Equipment
3
ABC of first aid are :
Answer
A. Airway Breathing Circulation
4
Which one of the following is not included in 5S?
Answer
C. Safety
5
Which of the following is not among chemical hazard?
Answer
B. Radiation
6
Colour and shape of mandatory sign is :
Answer
A. Circular with white symbol on blue background
7
Fire involving metals are classified under :
Answer
C. Class D
8
Steps for operation of fire extinguisher – P A S S is :
Answer
A. Pull Aim Squeeze Sweep
9
Which metal is in liquid state at room temperature?
Answer
C. Mercury
10
Brass is an alloy of ____________ and ____________.
Answer
A. Copper and zinc
11
Which one of the following is not physical property?
Answer
D. Elasticity
12
Pig iron is produced in ____________ furnace.
Answer
B. Blast furnace
13
In grey cast iron, carbon is present in the form of :
Answer
A. Flakes
14
Which metal is abundant on earth?
Answer
C. Aluminium
15
Which metal is present in calcium Hydroxide?
Answer
D. Calcium
060/2024 4 A
16
The most reactive metal is :
Answer
C. Potassium
17
Which material is used to make dies?
Answer
B. Tool steels
18
In cold chamber die casting machine, depending on metal, the cast pressure on the casting
metal may reach up to :
Answer
A. 700 MPa
19
Hot chamber die casting machine is used to cast :
Answer
D. Low melting alloys
20
___________ are cast through die casting only.
Answer
C. Thinner section casting
21
Which is not an advantage of die casting?
Answer
C. High cost of die
22
In cold chamber die casting machine the molten metal is fed into die cavity by means of :
Answer
B. Hydraulic Pressure
23
In hot chamber die casting machine :
Answer
B. Melting pot is an integral part of the machine
24
Cold chamber die casting machine is not suitable for :
Answer
D. Ferrous alloys
A 5 060/2024
25
In this type of casting hollow structures are made without using cores :
Answer
C. Both
26
Which is not the property of a Permanent Mould casting mould material?
Answer
C. Low melting point
27
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of
casting is known as :
Answer
C. Permanent mould casting method
28
Grey cast iron can also be produced by Permanent mould casting method using a thin
refractory coating or lining of sodium silicate or phosphoric acid to withstand :
Answer
A. High melting point
29
In carbon di oxide moulding the CO2 gas is passed through a sand mix containing :
Answer
B. Sodium silicate
30
Plaster moulding is only suitable for metals and alloys having melting point below :
Answer
D. 1200 °C
31
In shell moulding process mould cavity is created by :
Answer
B. Double shell
32
The casting method adopted for ornaments and toys of non-ferrous alloys is :
Answer
B. Slush casting
33
The reading accuracy of a steel rule is :
Answer
C. 0.5 mm
34
Try square is specified by according to :
Answer
B. Length of blade
35
Fine pitch hack saw blades are ____________ mm pitch?
Answer
B. 0.8 mm
36
Which caliper is used to marking line parallel to the inside and outside edges?
Answer
C. Jenny caliper
37
Name the hand tool is used for moistening the sand around the edge before the pattern is
removed :
Answer
B. Swab
38
Name the equipment used for pouring the molten metal from the furnace :
Answer
C. Ladles
39
Riddle is used for :
Answer
B. Cleaning the moulding sand
40
Name the file has individual sharp pointed teeth in a line :
Answer
B. Rasp cut file
41
The major portion contained in a good moulding sand is :
Answer
A. SiO2
42
Name the property of moulding sand to acquire a predetermined shape under pressure and
retain this shape when pressure is removed :
Answer
C. Plasticity
43
Molasses is a __________ type binder.
Answer
B. Organic
44
A mixture of 50% sand grains and 50% clay is called :
Answer
A. Loam sand
45
Core sand is also called :
Answer
C. Oil sand
46
Name the test is carried out to determine the percentage of distribution of grain size in
the sand :
Answer
A. Fineness test
47
Name the tool used to pierce holes in the rammed sand which permit the easy escape of
steam and gases :
Answer
A. Vent wire
48
The top part of the moulding box is called :
Answer
B. Cope
49
What are the main advantages of open sand mould?
(i) No need of box
(ii) No need of sand
(iii) less time and labour
(iv) Make indicate shape casting
Answer
A. (i) and (iii)
50
Three box mould will have two parting lines. Name the middle box?
Answer
C. Cheek
51
Which method is applicable for making small casting on mass production?
Answer
D. Stack mould
52
In which process mould is not prepared in foundry floor?
Answer
A. Plate mould
53
In ____________ the entire mould is prepared with the help of man power.
Answer
A. Bench mould process
54
Which one is the main advantage of machine moulding?
Answer
B. High production rate
55
To provide uniform hardness all over mould, the ramming operation is done in both :
Answer
D. Jolt and Squeeze machine
56
Which heat treatment of steel increases hardness?
Answer
B. Hardening
57
Which process produces only outer surfaces of job hardened, to some depth?
Answer
D. Case hardening
58
___________ is the operation of heating steel to specific temperature and cooling suddenly.
Answer
Question Cancelled
59
The main purpose of ‘Normalising’ steel is :
Answer
D. To produce fine grain of uniform structure
60
If material is softened and suitable for machining, which heat treatment process is used?
Answer
A. Annealing
61
Where the steel is reheated to a suitable temperature below the critical point (heating) to
improve the toughness and ductility?
Answer
C. Tempering
62
Normalising process is very similar to ___________ but the jobs are allowed to cool in air.
Answer
B. Annealing
63
Sprue in gating system refers to :
Answer
D. Vertical Passage
64
In a sound casting the last liquid to solidify is in the :
Answer
B. Riser
65
Riser must freeze slowly than the casting, so the volume to surface area ratio should be
maximum. This is maximum for :
Answer
C. Sphere
66
Which among the following is not an advantage of parting line gating?
Answer
D. Will cause erosion or washing out of mould
060/2024 10 A
67
The component that directs the molten metal into the cavity of the mould :
Answer
A. Ingates
68
Wax patterns are used in :
Answer
C. Investment casting process
69
The disadvantage in using wood as the material for pattern making is :
Answer
B. It get warped when not stored properly
70
Match plate pattern is mainly used for :
Answer
C. Machine moulding
71
The draft allowance to be provided on a pattern not depends on :
Answer
A. Cost of the casting
72
The surface to be machine is marked on the pattern by
Answer
D. Red colour
73
A foundry in which all the castings made are consumed for the product being manufactured
by the organisation :
Answer
A. Captive foundry
74
In what type of foundry process molten metal is poured into moulds while they are rotating?
Answer
A. Centrifugal casting
75
The tool used to blow loose particles of sand from the pattern and mould cavity :
Answer
D. Bellow
A 11 060/2024
76
Metal which expands on solidification :
Answer
C. Grey cast iron
77
Which among the following is a ferrous metal?
Answer
B. Steel
78
What is the purpose of adding a binder to Green Sand Mold?
Answer
A. To increase the strength of the mold
79
What is the primary function of a chaplet in loam sand casting?
Answer
B. To support overhanging features in the mold
80
Cement-bonded sand molds are commonly used for casting which types of metals?
Answer
D. Ferrous
81
The primary disadvantage of loam sand molds is their :
Answer
C. Long curing time
82
Which of the following materials is commonly used as fuel in cupola furnaces?
Answer
C. Coke
83
What is the primary function of a blast furnace?
Answer
B. Smelting
84
The lining of the hearth
Answer
A. Silica
85
Bessemer furnaces are primarily used for the production of :
Answer
D. Steel
86
What is the purpose of a flask in the context of moulding boxes?
Answer
B. To hold the sand mould in place
87
Moulding box tapered snap flasks are typically made from which material?
Answer
Question Cancelled
88
In a two-part moulding box frame flask, the cope is typically:
Answer
A. The top half
89
What is a snap flask primarily used for in foundry operations?
Answer
D. Sand moulding
90
Which of the following are core ramming machine given below?
(i) Jolting
(ii) Squeezing
(iii) Singing
(iv) Small bench blowers
Answer
Question Cancelled
91
Core box is used in which of the following purpose :
Answer
A. In making core
92
Which is used for getting entire mould cavity in casting?
Answer
A. Core
93
Which method is used for removing adhering sand from the casting?
Answer
A. Thumbling
94
Which is the finishing operation of casting?
Answer
C. Buffing
95
Which process is used to remove unwanted projections from the casting?
Answer
D. All of these
96
Which defect occur due to incorrect gating and feeding in casting?
Answer
A. Shrinkage
97
Which of the following are common casting defects?
(i) Cracks
(ii) Spatter
(iii) Undercut
(iv) Hot spot
Answer
C. (i) and (iv)
98
Which of the following defect occur due to insufficient fluidity of the molten metal?
Answer
A. Misrun
99
Which test are carried out to detect the internal defects?
(i) Impact test
(ii) Ultrasonic test
(iii) Radiographic test
(iv) Pressure test
Answer
B. (ii) and (iii)
100
Test in which specimen is tested without breaking is called _____________
Answer
B. Non destructive test
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