VSSC Welder Paper 2016

Vikram Sarabhai Space Center Welder Paper 2016

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Which one of the following is a temporary joint?
(a) Riveted joint
(b) Welded joint
(c) Soldered joint
(d) Press fit joint

“Arc eye” is _______
(a) An acute irritation/ pain in the eyes caused due to radiations emitted during welding
(b) The distance from the tip of electrode to the point where the arc makes contact with the work piece
(c) Centre point of the arc in an arc welding process
(d) None of the above

The type of current employed during an arc welding process is
(a) only alternating currents
(b) only direct currents
(c) either alternating or direct current
(d) None of the above

Which of the following equipment is used to convert an alternating current to a direct current?
(a) Alternator
(b) Transformer
(c) Rectifier
(d) Ammeter

A general purpose solder designated as ’60-40′ means
(a) a solder with 60% tin and 40% lead
(b) a solder with 40% tin and 60% lead
(c) a solder with 60% tin and 40% copper
(d) a solder with 40% tin and 60% copper

Which of the following is a solid state welding process?
(a) Friction Stir welding
(b) Electron beam welding
(c) Laser beam welding
(d) Gas tungsten arc welding

Which of the following is not a non-destructive test for detecting weld defects?
(a) Ultrasonic test
(b) X-ray test
(c) Dye penetrant test
(d) Tension test

Laser welding finds widest application in
(a) Heavy industry
(b) structual work
(c) electronics industry
(d) process industry

Fluxes are used in welding in order to protect the molten metal and surfaces to be joined from
(a) Oxidation
(b) distortion and warping
(c) unequal temperature distribution
(d) dirt

Weaving in an arc welding refers to
(a) side to side motion of the electrode at right angles to the direction of welding
(b) side to side motion of electrode along the direction of welding
(c) spiral motion given to the electrode during welding
(d) a technique of striking the arc