Air at 20°c (1 atm) is flowing over a 5-cm diameter sphere with a velocity of 3.5 m/s. if the surface temperature of the sphere is constant at 80°c, determine (a) the average drag coefficient on the sphere and (b) the heat transfer rate from the sphere.

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.