Steady-state creep data taken for an iron at a stress level of 139 mpa are given here:
'ϵs(h−1) t(k)
6.6 x 10^−48 1090.
8.8 x 10^−2 1200
if it is known that the value of the stress exponent n for this alloy is 8.4, compute the steady-state creep rate at 1310 k and a stress level of 87 mpa.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure