A 250 x 150 mm rectangular beam is subjected to maximum bending moment of 750 kNm. Determine: (i) (ii) The maximum bending stress in the beam I If the value of E for the beam material is 200 GN/in?, find out the radius of curvature for that portion of the beam where the bending is inaximum. (iii) The value of the longitudinal stress at a distance of 65 mm from the top surface of the beam.​

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

Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 k, 1 bar, with a volumetric flow rate of 0.25 m°/s, and exits at 325 k, 0.95 bar. the flow area is 0.04 m2. assuming the ideal gas model with k = 1.4 for the air, determine (a) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer, in kw flow rate, in kg/s, (b) the mass kg 0.3

Explain the similarities and differences in the design guidelines for turning and for