Assume the liquid film in Example 5.9 is not isothermal but instead has the following distribution TðyÞ T 0 ðT w T 0 Þ 1 yh where T 0 and T w are respectively the ambient temperature and the wall temperature The fluid viscosity decreases with increasing tem perature and is assumed to be described by μ μ 0 1 aðT T 0 Þ with a 0 In a manner similar to Example 5.9 derive an expression for the velocity profile

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

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?