The following figure shows the tensile stress-strain curve for a brass alloy. (a) What is this alloy's tensile strength?
(A) 650MPa (B) 285MPa (C) 515MPa (D) 3,000MPa

(b) What is its modulus of elasticity?
(A) 75GPa (B) 110GPa (C) 45GPa (D) 215GPa

(c) What is the yield strength?
(A) 465MPa (B) 400MPa (C) 285MPa (D) 500MPa

On a average work day more than work place firs are reorted

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.