1.

When the material is entering the roller, what is the tension at the entry zone called?(a) Front tension(b) Above tension(c) Back tension(d) Beneath tensionThe question was asked in a national level competition.My query is from Principle of Roll Pass in section Forming Process of Casting-Forming-Welding II

Answer»

The CORRECT choice is (c) BACK tension

The explanation is: When the material is ENTERING the ROLLER, the tension experienced at the entering zone is CALLED as back tension.



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