208/2015

Maximum: 100 marks
1. Carbon content of grey cast iron is·:

Less than 0.5%


1.0-1.5%


2. Brass is:

Cu-Zn alloy


Cu-Pb alloy


3. Large size bolt heads are made by

Hammering


Swaging


4. A micron is

1mm


O.Olmm


5. The melting point of gold is

100·C


1063·C


6. For soldering of Brass and Copper, the flux used is

Zinc Chloride


Cupric acid


7. Forging results in the following:

Reduced mechanical properties


Creates internal defects


Time: 1 hour and 15 minutes
0.5-1%
2-3.5%
Cu-Tin alloy Cu-Ni alloy
Casting Upset forging
O.lmm
O.OOlmm
569·C
1493·C
HCl acid Ammoniumchloride
Improves the grain flow All of the above
8. The property of a material which enables it to retain the deformation permanently is called:
Brittlimess Stiffness
Maliability Plasticity A3
[P.T.O.]
9. Blast finance is used to produce:

Pig iron


Wrought iron


10. Wrought iron

is a ductile material


can be easily forged or welded



Cast iron


Steel



cannot stand sudden and excessive shocks


all of these.

11. Which of the following materials cannot be forged?

Wrought iron


Mild steel


12. Hot working operation is carried at

Re crystallization temperature


Near olastic stage temperature


Below recrystallization temperature


Above recrystallization temperature


13. In an anvil, punch hole is used for:

Bending rods of small diameter


Cold punching operation


Holding irregular work


Cutting operations.



Cast iron


High carbon steel


14. Which of the tong used for bolts rievets and other work of a circular section?
Flat tong Rent tong
Gad tong None of the above
15. Swaging:


Causes a steadily applied pressure instead of impact force


Is used to force the end of a heated bar into a desized shape


Is a forging operation in which two halves of a rotating die open and close rapidly while impacting the end of the heated tube or shell.


Is a forging method for reducing the diameter of a bar and in the process making it longer


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A
16. Bick iron is made of

Tool steel Cast iron


Wrought iron All the above


17. Cutting edge of a cold chisel, hot chisel are respectively:

60,30 30,45


45,60 30,60


18. In forge welding the method of preparing the pieces of metal for welding is

Edge preparation Cutting


Scarfmg Polishing


19. Commonly used size of anvil is

150kg 200kg


250kg 400kg


20. The process in which the cross section of the work piece is increased by reducing its length is caned:

Upsetting Fullering


Swaging Drifting


21. Which of the following process is different from the rest of the processes?

Shot peening Cold extrusion


Sand blasting Drop forging


22. Alpha iron has the crystal structure of

BCC FCC


HCP None of the above


23. The defect occurred in some alloy steel due to rapid cooling from forging temperature is

Creep Flakes


Cracks Dents


. 24. Corronion resistance of steel is increased by adding:

Tungston and Sulpher Nickel and molybolenum


Nickel and chromium Zinc and aluminium


A 5 20812015 [P.T.O.]
25. Which of the following processes would produce strongest components?

Forging Die casting


Cold rolling Hot rolling


26. The process of deforming a metal at room temperature to improve its hardness is known as

Recrystallisation Normalization


Tempering Work hardening


27. The imperfection in crystal structure of metal is called:

Slip Impurity


Fracture Dislocation


28. Which of the following is the advantage of Drop farging?

There is little wastage of material


The operation are relatively faster


The strength of the material is enhanced


All of the above


29. For Smithy operation, the anvil used to hold small work piece is

Bench vice Hand vice


Bick iron Leg vice


30. Which type of rule is used for marking and measuring patterns and hot jobs handled by blacksmith?

Narrow rule Shrink rule


Hook rule Short rule


31. The forging of steel specimen is done at a temperature of

400·C 800·C


llOO·C 1500·C


32. The process of removing the burns or flash from a forged component in drop forging is called:

Swaging Perforating


Trimming Fettling


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33. is a safety device used for protecting eyes while working in the furnace.

Goggles Mask


Apron Gloves


34. An opening through which the blast air enters blast furnace is

Wind box Blower


Tuyers Slag hole


35. The furnace for melting non ferrous metals are

Cupola Open hearth furnace


Blast furnace Crusible furnace


36. The recrystallisation temperature for steel is near to

550·c 1025·c


960·c BOO·c


37. C-14 steel indicates plain carbon steel containing carbon percentage:

0.14 1.4


1 to 0.18 14


38. Dielectric materials are

Insulators Semiconductors


Conductors Super conductors


39. . Forging defect:

Swell Scabs


Hot tear Fins and rags


40. Fatigue strength of a part can be increased by

Having surface well fInished


Maintaining the temperature at lowest possible level


Super imposing static stress.


Reducing frequencing operation


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41. Which is the only method to join metals permanently?

Brazing Soldering


Welding Seaming


42. Centre punch tip is ground at

60° 90°


40° 70°


43. In a gas welding which flame is used to weld brass?

Neutral flame Carburising flame


Oxidising None of these


44. is used to convert AC welding supply into DC welding supply.

welding transformer welding generator


welding rectifier motor generator


45. For primary combustion, the volume of acetylene and oxygen are supplied from the blow pipe to produce a neutral flame:

1:1.5 1:1


1:2.5 1:2


46. Which type of apron is used while during welding? . Plastic Cotton
Silk Leather
47. What will happen unsafe welding practice, keeping the welding floor in wet condition?

cut on the legs eye injury


electric shock burn injury


48. Brass is an alloy of

copper +tin copper zinc


copper lead copper aluminum


49. What is the temperature of oxy-acetylene flame?

3000°c -3100°c 3100°c -3300°c


2400°c -2700°c 2700°c -2800°c


20812015 8 A
50. A groove or channel formed in the parent metal at the toe of the weld is called:

under cut edge melted off


crack porosity


51. The normal storing capacity of acetylene in dissolved state is 6m3 with the pressure ranging between:

20 -25 kg/cm2 120 -150 kg/cm2


15 -16 kglcm2 60 -80 kglcm2


52. The size of the nozzle used to 1.6 mm plate thickness of the joint to be welded:
3 1
5 7
53. Low Hydrogen type electrodes are called electrodes.

cellulose coating rutile coated


iron coated basic coated


54. Which colour coding is used to identify the argon cylinder?

blue grey


black maroon


55. The ratio of the coating diameter to the core wire diameter is called:

dia of electrode coating factor


size of electrode length of electrode


56. If the main electric supply is not available, we can do arc welding with:

transformer set engine generator set


motor generator set rectifier set


57. In pipe welding, the pipe is in vertical and welding is in horizontal position. What is the welding position?

IG 5G


2G 6G


A 9 20812015 [P.T.O.)
58. spoil metal surface due to the effect of various elements in the atmosphere and water.
oxidation reduction
•
corrosion thermal expansion
59. Shade number of coloured glass for manual metal arc welding current in amperes up to 100

8-9 10-11


12 -14 11-13


60. The distance between the junction of the metals and the point where the weld metal touches the base metal toe is called:

heat affected zone leg length


throat thickness fusion penetration


61. is the straight distance between the electrode tip and the job surface when the arc is formed.

arc stream arc length


leg length heat affected zone


62. When the arc deviates from it's regular paths due to the magnetic disturbances. It is called:

distoIiion gravity


arc blow polarity


63. 3.15 mm electrode diameter equal to electrode.

12 10


14 16


64. Which effect is more useful in the case of over-head welding?

Gravity force Electromagnetic force


Surface tension .Gas expansion force


65. Steel with a carbon range of-0.05 to 0.30% are called steel.

high carbon steel medium carbon steel


'low carbon steel high speed steel


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66. While gas cutting the nozzle should be

touch the work 2 mm away from work


5 mm away from work 10 mm away from work


67. Argon gas is a

inert gas fuel gas


supporting of fuel gas active gas


68. A is used for removing metal I oxide from the outer surface and to make the metal piece edges square.

hack saw file


chisel hammer


69. Which one is a pressure welding process?

Electric arc welding Atomic hydrogen arc welding


Submerged arc welding Resistance welding


70. D.A. cylinder means:

dissolved acetylene dissolved air


dissolved argon defective acetylene


71. What is meant by MAG welding?

Metal Arc Gas Metal Active Gas


Metal Inactive Gas Metal Acetylene Gas


72. In C02 cylinder, what is the necessity of pre-heater?

to pre-heat the gas to reduce the gas


to stop the gas to produce the gas


73. Which shielding gas has low density compared to air in MIG I MAG welding?

Helium Argon


Neon Carbon dioxide


74. Which power source is suitable for GMAW?
AC . DC
DC constant voltage DC low voltage
A 11 20812015 [P.T.O.]
75. Nickel and Titanium can be welded only by this process. Which process is that?

MIG welding TIG welding


Sub merged arc welding Electro slag welding


76. Which material is used to make gas nozzle in TIG welding process?

Mica Ceramic


Bakelite Graphite


77. Coding of electrodes in IS: system, the third digit indicating:

Welding position Ultimate tensile strength


Percentage elongation Current condition


78. is the ability of the metal to stretch, bend or twist without breaking or cracking.

Tensile strength Brittleness


Toughness Ductility


79. Which inert gas cylinder is coloured in black with white neck?

Argon Helium


Carbon dioxide Neon


80. An example of non·destructive test is

Radiography test Nick break test


Free bend test Tensile test


81. post -dated cheque on a crashing bank' was Gandhiji's opinion about:

Simon commission Crips mission


Hunter commission Cabinet mission


82. Jog falls is in the river:

Kabani Ganga


Narmada Sharavathi


83. Bhoodan movement was started by

SundarlalBahuguna Nithya chaithanya Yathi


Swami Vivekananda Acharya Vinobha Bhave


20812015 12 A
84. India's first five year plan was started in

,1950 1951


1961 1960


85. The oldest mountain range in India:

The Aravalli The Himalaya


The Vindhya The Western Ghat


86. The rescue operation conducted by Govt. of India in Yemen is called:

Operation blue star Operation Vijay


Operation Rahat Operation sealion


87. Chattambi Swamikal attained Samadhi at:

Panmana Varkala


Venganoor Pallana


88. The organization 'Khudhai Khidmathkhars' was organized by

Rani Gaidilue Sir Sayed Ahamed Khan


Khan Abdul Gafar Khan Mohamedali Jinnah


89. Bharath Mala and Sagar Mala iue the projects related to

Health Education


IT Roads


90. Ananthamatham was founded by

Kumara Guru Pandit Karuppan


Brahmananda Sivayogi Vagbhatananda


91. The highest mountain peak in South India:

Mount Everest Anamudi


MountIU Nilgiri


92. The proposed capital of Andhra Pradesh is

Hyderabad Secunderabad


Warangal Amaravathi


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93. Who was known as the father of Muslim Renaissance in kerala?

Ali Musliyar Mohamed Abdurahiman


Vakkom Abdul Khader Moulavi Moidu Moulavi


94. K.M. Mani presented his 13th budget in Kerala assembly on

March 13, 2015 March 12, 2015


March 16, 2015 March 11, 2015


95. Edwin Arnold's 'The Light ofAsia' inspired Kumaranasan to write

Chandalabhikshuki Buddhacharitha


Prarodanam Veenapoovu


96. The historic midnight speech was delivered by

Jawaharlal Nehru Gandhiji


Jinnah Bhagath Singh


97. Lee Kuan Yew, who died recently was the father of modern

Malasia Singapore


China Indonesia


98. The original name of Thycaud Ayya was:

Muthukutty Kunhan Pillai


Govindankutty Subbarayer


99. Mamankam was held in

Ponnani Kozhikode


Thirunavaya Tirur


100. The political party formed by C.R. Das and Mothilal Nehru in 1922

Swarajist party Home rule league


Forward block Congress socialist party


14 A
208/2015