1.

When the Plasma Beam machining process came into the industrial world?(a) 1920s(b) 1930s(c) 1950s(d) 1970sThe question was asked in unit test.My enquiry is from Plasma Beam Machining-Introduction And Machining system topic in section Thermal Processes of Advanced Machining

Answer»

The correct choice is (c) 1950s

The EXPLANATION is: The Plasma Beam machining process came into the industrial WORLD in the EARLY 1950s as an ALTERNATIVE for the oxy-gas flame CUTTING process.



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