Kerala Public Service Commission Tradesman Welder Technician Paper 2016
Which one of the process requires bare metal electrode and granular flux ?
(a) MAG welding
(b) MIG welding
(c) Submerged arc welding
(d) Stud welding
Spot welding, seam welding, flash butt welding is different methods of ___________
(a) Resistance welding
(b) Friction welding
(c) Thermit welding
(d) Electro slag welding
Which type of electrode is used in submerged arc welding ?
(a) Cored electrode
(b) Light coated electrode
(c) Heavy coated electrode
(d) Bare wire
In which position is SAW welding is done ?
(a) Flat and Horizontal
(b) Flat and Vertical
(c) Flat and Overhead
(d) Horizontal and Vertical
Which one of the following is a resistance welding process ?
(a) Spot welding
(b) Thermit welding
(c) Forge welding
(d) Explosive welding
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
Punches used for marking purpose are made of ________
(a) Cast iron
(b) Mild steel
(c) Stainless steel
(d) High carbon steel
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
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
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
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
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
Which mechanical properties of metal give resistance to pulling force ?
(a) Toughness
(b) Ductility
(c) Hardness
(d) Tensile strength
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 reinforement
Which of the following metal has highest thermal conductivity?
(a) Zinc
(b) Copper
(c) Mild Steel
(d) Aluminum
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 burn through
Oxygen gas will change into liquid condition at
(a) -195.8 degree Celcius
(b) -182.9 degree Celcius
(c) -181.7 degree Celcius
(d) -172.8 degree Celcius
Which of the following metal has the highest melting temperature ?
(a) Copper
(b) Tungsten
(c) Aluminum
(d) Mild Steel
In which position is electro slag welding generally done ?
(a) Horizontal
(b) Vertical
(c) Flat
(d) Overhead
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 the above
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