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Which of the following methods cannot be used for welding carbon steel?(a) Arc welding(b) Gas welding(c) Ultrasonic welding(d) Forge welding

Answer» Right choice is (c) Ultrasonic welding

Easy explanation: For the welding of carbon steel material, one may use the arc welding method. To gas weld carbon steel is also a feasible option and carbon steels can be treated using forge welding also, but it cannot be welded using ultrasonic welding.


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