engineering recuitment UPPSC AE Mock Test 2024 Production Engineering (Manufacturing) Metal Forming Rolling
A strip is to be rolled from a thickness of 36 mm to 20 mm using a two-high mill having rolls of diameter 400 mm. The approximate value of the coefficient of friction for unaided bite will be:
1
0.22
2
0.25
3
0.28
4
0.20