13) Which among the following is a forging defect, which occurs during the upsetting process when faces of the stock become square ?

14) Which among the following is used for bending hooks of flat and round steel bars ?

15) Fullers are used for

16) A high carbon steel has to be forged. Which colour indicates the most suitable forging temperature ?

17) The process of local thinning down of a stock by forging operation is called as :