ISRO Scientist or Engineer Mechanical 2008
For the following questions answer them individually
A 10 kg solid at $$100^\circ C$$ with a specific heat, of 0.8kJ/kg. $$^\circ C$$ is immersed in 40 kg of $$20^\circ C$$ liquid with a specific heat of 4.0 kJ/kg $$^\circ C$$. Estimate the temperature after a long time if the container is insulated?
A spherical shaped vessel of 1.4 m outer diameter is 90 mm thick. Find the rate of heat leakage, if the temperature difference between the inner and outer surfaces is $$220^\circ C$$. Thermal conductivity of the material of the sphere is 0.083 W/m K.
$$\left(\frac{\partial p}{\partial V}\right)_T \left(\frac{\partial v}{\partial T}\right)_p \left(\frac{\partial T}{\partial p}\right)_v$$ is equal to
A well insulated vessel containing air is heated to double the pressure and temperature 150% in excess of initial. The amount of air that leaked is
An unconstraint thin circular disc has a concentric hole in it. On heating the diameter of the hole will
The specific heat of diatomic gas at constant pressure is given by (R = universal gas constant and M = molecular weight of gas)
The variation of temperature inside a wall is shown by three different curves. In which case thermal conductivity least varies with temperature
Given that Nu = Nusselt number, Re = Reynoids number, Pr = Prandtl number, Sh = Sherwood number, Sc = Schmidt number and Gr = Grashoff number. The functional relationship for free convective heat transfer is given as,
