TRADESMAN - WELDING - TECHNICAL EDUCATION.pdf (Size: 1.13 MB / Downloads: 1)

1.Which one of the process requires hare metal electrode and granular flux ?
(A)MAG welding
(B)MIG welding
(C )Submerged arc welding
(D)Stud welding

2.Spot welding, seam welding, flash butt welding is different methods of_____
(A)Resistance welding
(B)Friction welding
(C )Thermit welding
(D)Electro slag welding

3.Which type of electrode is used in submerged arc welding ?
(A)Cored electrode
(B)Light coated electrode
(C )Heavy coated electrode
(D)Bare wire

4.In which position is SAW welding is done ?
(A)Flat and Horizontal
(B)Flat and Vertical
(C )Flat and Overhead
(D)HoriZAintal and Vertical

5.Which one of the following is a resistance welding process ?
(A)Spot welding
(B)Thermit welding
(C )Forge welding
(D)Explosive welding

6.Shielded metal arc welding is classified under the process of ______.
(A)Electric resistance welding
(B)Electric arc welding
(C )Special welding
(D)Electro gas welding

7.Punches used for marking purpose are made of _______________.
(A)Cast iron
(B)Mild steel
(C )Stainless steel
(D)High carbon steel

8.A ball peen hammer is specified by____________
(A)Its weight
(B)Length of handle
(C ) Shape of the face
(D) The material of the head
,
9.The tool used to draw lines on a chalk coated metal surface is 

called_______
(A)Wing compass
(B)Try square
(C )Steel rule
(D)Scriber

10.It is a resistance welding process in which roller type electrodes are 

used :
(A)Spot welding
(B)Seam welding
(C )Projection welding
(D)Flash butt welding

11.Which of the following metal plates can not be joined by projection 

welding ?
(A)Thin plates
(B)Copper plates
(C )Mild steel plates
(D)Stainless steel plates

12.What is the purpose of copper coating on the mild steel filler wire ?
(A)To heat faster
(B)To increase strength
(C )To avoid rusting
(D)For good appearance

13.Which mechanical properties of metal give resistance to pulling force ?
(A)Toughness
(B)Ductility
(C )Hardness
(D)Tensile strength

14.A key hole is to be maintained through out in the first run of butt joint 

to ensure :
(A) Crack free joint
(B) Proper root penetration
(C )Proper bead width
(D)Good reinforcement

15.Which of the following metal has highest thermal conductivity ?
(A)Zinc
(B)Copper
(C )Mild steel
(D)Aluminum

16.Over heating of blow pipe nozzle to be avoided because it will 

cause________.
(A)Flash back
(B)Consume more gases
(C )Create undercut
(D)Cause bum through

17.Oxygen gas will change into liquid condition at_________.
(A)-195.8°C
(B)-182.9°C
(C )-181.7°C
(D)-172.8°C

18.Which of the following metal  has the highest melting temperature ?
(A)Copper
(B)Tungsten
(C )Aluminum
(D)Mild steel

19.In which position is electro slag welding generally done ?
(A)Horizontal
(B)Vertical
(C )Flat
(D)Overhead

20.One of the advantages of submerged arc welding is____________.
(A)High deposition rate and speed 
(B)Quality weld
(C )Thick metal can be weld
(D)All of above

21.Which of the following are ferromagnetic materials ?
(A)Aluminum. Iron, Copper
(B)Iron. Copper,Nickel
(C )Iron, Cobalt, Nickel
(D)Copper, Aluminum, Silver

22.In the solvent removable penetrant process, excess penetrant is removed 

with :
(A)A water spray
(B)A hydrophilic scrubber
(C )A solvent spray
(D)Clean, lint free towels slightly moistened with solvent

23.The limitation of a liquid penetrant test is :
(A)Only surface breaking discontinuities can be detected
(B)Porous materials cannot lie tested
(C )There is cleaning problem following penetrant inspection in some cases
(D)All of the listed limitations are correct

24.Gas welding tip orifice should only be cleaned with :
(A) Soft copper wire
(B) Tip cleaner
(C ) A small drill
(D) Steel wire

25.The function of injector in Low Pressure blow pipe is :
(A)High pressure oxygen draws acetylene and increases its velocity
(B)Decrease the velocity of oxygen equal to acetylene velocity
(C )To check the flow of oxygen
(D)Increase the velocity of oxygen

26.The nozzles are generally made of copper because :
(A) Rust will not take place
(B) Air tight fitting
(C ) Cheaper
(D) High melting point

27.The blow pipe fitted with injector will prevent:
(A)Flash back
(B)Reverse flow of acetylene gas
(C )Flow of high pressure oxygen 
(D)Defects

28.For removing water vapors from the acetylene gas, the material used 

is_____________.
(A) Filter wool 
(B) Steel wool 
(C ) Pumice stone
 (D) Paper filter

29.Glycerin is added to water in the hydraulic back pressure valve in order 

to________
(A)Prevent overheating
(B)Prevent freezing
(C )Cool
(D)Remove salt content

30.Why acetylene cylinders should always he kept upright/vertical position ?
(A)To save floor space
(B)To get uniform flow of gas
(C )To help welding in vertical position
(D)To avoid the flow of acetone liquid along with gas

31.To set a oxidizing flame :
(A)Open acetylene gas and ignite to burn in air
(B)Set a neutral flame and decrease acetylene
(C )Set a neutral flame and increase acetylene
(D)Set a neutral flame and decrease oxygon

32.Which type of flame is used to wold brass ?
(A) Air acetylene flame
(B) Neutral flame
(C ) Oxidizing flame
(D) Carburizing flame

33.What is the maximum thickness of MS sheet that can be weld in leftward 

technique ?
(A)12 mm
(B)8 mm
(C )10mm
(D)5mm

34.The angle of blow pipe to the line of weld in leftward welding technique 

is :
(A)40 - 50‘
(B)50 - 60°
(C )60 - 70
(D)70’ -5O

35.Copper should not be used in acetylene gas piping because :
(A)Copper react with acetylene and form explosive compound
(B)Copper is weak metal
(C )Acetylenecannot compressed
(D)Copper hashigh expansion

36.The greatest amount of heat is produced in an oxyacetylene flame at 

_________.
(A)Inner cone
(B)Outer envelope
(C )The out let tip of nozzle
(D)Just ahead of innercone

37.Purpose of lifting a hose protector is to __
(A)Permit the gas to flow from blow pipe to cylinder
(B)Avoid return flow of gas to cylinder
(C )Permit the gas flow in both directions
(D)Avoid gas flow to blow pipe

38.The maximum pressure of acetylene gas that can be compressed in a cylinder 

:
(A)1 kg/cm2 
(B)15 kg/cm2 
(C )100 kg/cm2
(D) 150kg/cm2

39.The function of gas regulator is____________.
(A)To get different type of flame 
(B)To mix both gases
(C )To change temperature
(D)To set working pressure

40.The function of filler rixl in gas welding is________.
(A)To obtainadditional elements
(B)To increase the fluidity
(C )To obtaingood penetration
(D)To help welding

41.The safety device used to protect the eves while grinding is_________.
(A)Hand screen
(B)Helmet
(C )Chippinggoggles
(D)Chipping screen

42.Name the flux used for brazing of MS sheets :
(A)Hydrochloric acid
(B)Zinc chloride
(C )Tallow resin
(D)Borax

43.Acetylene gas is dissolved in________liquid in cylinder.
(A)Water
(B)Acetone
(C )Calcium hydroxide
(D)Kerosene

44.The colour code for identifying oxygen gas cylinder is_________.
(A)Maroon
(B)Black
(C )Blue
(D)Red

45.Oil and grease can react violently, when contact with high pressure 

________.
(A)Carbon dioxide
(B)Propane
(C )Oxygen
(D)Hydrogen

46.When a hose protector is fitted, the gas can only flow_________.
(A)Blow pipeto cylinder
(B)Cylinder to blowpipe
(C )Both ways
(D)Will not flow

47.Soldering is a method of joining two metal pieces by means of a third 

metal having relatively _______________ melting temperature.
(A)Low
(B)High
(C )Equal
(D)Above

48.The flow of molten solder in the gap between the work pieces is driven 

by_______force.
(A)Centrifugal
(B)Capillary
(C )Viscosity
(D)Wetting

49.Solders melt at a temperature___________°C.
(A) Above 350
(B)Below 350
(C ) Above 450
(D) None of the above

50.Soldering tlux has a melting point__________the melting point of solder.
(A)Low
(B)High
(C )Equal
(D)Above

51.In brazing the filler material melt at a temperature_________the melting 

temperature of
the material to be joined.
(A)Below
(B)High
(C )Equal
(D)Above

52.Soldering of MS sheets takes place at a temperature of___________.
(A)150oC
(B)40oC  
(C )250oC
(D)850oC

53.One of the necessities of welding transformer is__________.
(A)To reduce voltage and increase current
(B)To convert electrical energy to mechanical
(C )To get defect free weld
(D)To control distortion

54.Which one of the following welding machine can supply AC or DC ?
(A)Engine driven Generator
(B)Motordriven Generator
(C )Transformer
(D)Transformer rectifier

55.The value of open circuit voltage in manual metal arc welding 

is__________volt.
(A)40 - ISO
(B)60-70
(C )60- 130
(D)110-220

56.Forge welding is classified as :
(A)Fusion welding without pressure
(B)fusion welding with pressure
(C )Non-tusion welding with pressure
(D)Non-fusion welding without pressure

57.If main electric supply is not available, we can do arc welding 

with_________.
(A)Motor generator set
(B)Transformer set
(C )Engine generator set
(D)Rectifier set

58.The amount of current setting for welding depends upon_____________.
(A)The thickness of plate
(B)The type of currentAC/DC
(C )Type of metal to be weld
(D)The diameter of electrode used

59.While selecting straight polarity___________.
(A)Electrode is connected to positive side
(B)Base metal connected to positive side
(C )l/3rd heat developed in base metal
(D)2/3rd heat developed in electrode

60.The arc welding transformer is a____________transformer.
(A)Step down
(B)Step up
(C )One to one
(D)Increasing voltage

61.The easy position to weld is__________.
(A) Flat
(B) Vertical
(C ) Horizontal 
(D) Overhead

62.During over head welding it is more convenient to use 
(A) Welding goggles
(B) Helmet
(C ) Hand screen
(D) Sun glass

63.Depth of fusion from the surface of the weld metal is known as
(A) Fusion zone
(B) Heat affected zone
(C ) Throat thickness
(D) Leg length

64.Electrode connected to positive terminal :
(A) Straight polarity 
(B)Wrong polarity 
(C ) Reverse polarity
(D)Electrode to holder

65. More spatters are due to________________.
(A) Low current 
(B) More speed 
(C ) Excess current 
(D) Big size electrode

6b. In DC supply the heat distribution is more at_________________.
(A)Positive terminal
(B)Negative terminal
(C )Equal in both terminal
(D)No variation

67. The effect of arc blow will be totally absent in______________.
(A)DC straight polarity
(B)DX' reverse polarity
(C )AC welding
(D)Welding with long arc

68.The electrodes are manufactured i 
(A)350 mm and 450 mm
(C )400 mm and 500 mm
(B).350 mm and 250 mm
(D)10" and 18"

69. A lap joint has two standards lengths namely :
(A) Parts in the same plane 
(B) Overlapping parts 
(C ) Parts in the same plane
(D) A part perpendicular to another part

70. In the 5G position, pipe must be located in a_______________axis.
(A) Vertical axis
(B)Fixed horizontal axis
(C ) Rotating vertical axis
(D) Fixed vertical axis

71. Which is not coming under ferrous metal ?
(A) Steel
(B) Iron ’
(C ) Copper
(D) Cast iron

72. Which is not an alloy ?
(A) Steel
(B) Brass
(C ) Stainless steel
(D) Iron

73. Which of these devices is/are acceptable and safe for lighting a welding 

torch ?
(A) Matches
(B) Cigarette lighter 
(C ) Spark lighter 
(D) All of the above

74.What is the duty cycle of a welding machine designed to operate 

continuously for 7 out of every 10 minutes ?
(A)10 percent
(B)70 percent
(C )30 percent
(D)None of the above

75.Name die instrument/tool used for transferring and setting of distances ?
(A)"L" square
(B)Steel rule
(C )Wing compass
(D)Straight edge

76.Ammonium Chloride is used as a flux for soldering ?
(A)Steel
(B)Aluminum
(C )Galvanized iron
(D)Stainless steel

77.Name of the instrument used to check the perpendicularity of the branch 

pipe with the main pipe of a pipe T joint ?
(A)Protractor
(B)Try square
(C )Spirit level
(D)Straightedge

78.Which one of the following metals will not permit X-rays to pass-through ?
(A)Stainless steel
(B)Aluminum
(C )Lead
(D)Tin

79.The distance between the root and toe of a fillet weld is called_____.
(A)Root gap
(B)Leg length
(C )Reinforcement
(D)Throat thickness

80.Thermit mixture used in thermit welding can be ignited with an initial 

temperature of
(A)1500’C
(B)1000oC
(C )1200=C
(D)500°C

81.The Lakshadweep (Laccadive) is situated in :
(A)The Bay ofBengal
(B)Arabian Sea
(C )Indian Ocean
(D)Persian Gulf

82.World Forest Day is celebrated on :
(A)March 21
(B)July 10
(C )June 05
(D)October10

83.Name the most densely populated state in India according to the census 

2011 :
(A)Uttar Pradesh
(B)West Bengal
(C )Haryana
(D)Bihar

84.Who drafted the people's plan ?
(A) Jayprakash Narayan
(B) M. Visvesaraya
(C ) M.N. Roy
(D) Mahatma Gandhi

85.Who led the Revolt of 1857 at Jagdishpur ?
(A) Kunwar Singh
(B) Nana Saheb
(C ) Maulavi Ahmadullah
(D) Bakht Khan

86.The Simon Commission was appointed in :
(A) 1926
(B)1927
(C )1928
(D)1929

87.Who founded the Self Respect Movement ?
(A) Jyotiba Phule
(B) Dr. B.R. Ambedkar
(C ) Annie Besant
(D) E.V. Ramaswami Naicker

88.The Palaruvi waterfalls is in the district of:
(A) Thiruvananthapuram
(B) Kollam
(C )Pathanamthitta
(D) Idukki

89.Name the headquarters of the KERAFED :
(A) Alappuzha
(B) Palakkad
(C ) Thrissur
(D) Thiruvananthapuram

90.The Sabarigiri hydroelectric project is in the river :
(A) Pampa
(B) Perivar
(C ) Chalakkudi 
(D) Kallada

91.Who published the magazine, 'Sivayogavilasam' ?
(A) Chattampi Swami
(B) Thvcand Avya
(C ) Vaghbhatananda
(D) Subhananda Gurudevan

92.The work 'Vichithra Vijayam' written by Kumaranasan is a :
(A) Poem
(B) Drama
(C ) Short story 
(D) Biography

93.Mannath Padmanabhan conducted the Savama Jatha in connection with :
(A)Vaikkom Satyagraha
(B)Malayali Memorial
(C )Guruvayoor Satyagraha
(D)Abstention Movement

94.The Prathyaksha Raksha Daivasabha was founded in :
(A)1919
(B)1906
(C )1916
(D)1909

95.Name the author of the book,' Balakalesam' :
(A)Sree Narayana Guru
(B)Dr. Palpu
(C )Pandit K.P. Karuppan
(D)V.T. Bhattathirippad

96.Who became the champion of the Copa America Centenario Football Tournament 

?
(A)Argentina
(B)Chile
(C )America
(D)Columbia

97.Name the country which is connected with BREXIT :
(A)Britain
(B)America
(C )Mexico
(D)China

98.Who is inchargt of cinema in the new cabinet of Kerala ?
(A)E.P. Jayarajan
(B)G. Sudhakaran 
(C )K.T. Jaleel
(D)A.K. Balan

99.Name the place selected to be the new capital of Andhra Pradesh :
(A)Amaravati
(B)Hyderabad
(C )Vijayawada 
(D)Kumool

100.Who is the new' President of the Board of Control for Cricket in India 

(BCCI) ?
(A)Ravi Shastri
(B)Anurag Thakur 
(C )Anil Kumble
(D)Saurav Ganguly