ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

61) The nozzle portion of the torch employed for GTAW is made of

Answer is:

ceramics

62) The following welding process has greater directional stability due to passage of arc through copper orifice

Answer is:

Plasma arc welding

63) Carbon supplied by carburising flame makes the weld

Answer is:

Hard and Brittle

64) Welding in horizontal, vertical and overhead position is difficult because the molten metal is deposited against gravity. Which physical property of metal helps in retaining the molten metal on the joint in overhead position?

Answer is:

Surface tension

65) Which one of the following elements has the highest metallurgical influence on the weldability of steel?

Answer is:

Carbon