200 m/s over one side of flat plate of length 2.5 m. In the wind tunnel, one measures the friction coefficient to be 10-3 . a) Find the Reynolds number of the flow. b) Using the friction coefficient and Reynolds number find the convection coefficient. State the relation and the assumption clearly. c) Find the minimum heat flux at the plate surface necessary for the surface temperature to remain above zero. Neglect radiation.

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

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

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)