Determine the percentage elongation and percentage reduction in area for a tensile test specimen. Use the following results:
Gauge length= 120 mm
Final fracture length= 162 mm
Original cross-sectional area= 15 mm?
Final cross-sectional area = 11.25 mm2

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

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.