Heat Transfer Kirchoff's law is applicable to Total radiation only Only volumes and not to surfaces Both A and B Monochromatic radiation only Total radiation only Only volumes and not to surfaces Both A and B Monochromatic radiation only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when CPA > CPB CPA < CPB KA < 0.5kB KA>2 kB CPA > CPB CPA < CPB KA < 0.5kB KA>2 kB ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A diathermaneous substance __________ the thermal radiation completely. None of these Transmits Reflects Absorbs None of these Transmits Reflects Absorbs ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 2-4 heat exchanger involves Smaller pressure drop compared to 1-2 exchanger Only parallel-flow of fluids Both counter and parallel-flow of the fluids Only counter-flow of fluids Smaller pressure drop compared to 1-2 exchanger Only parallel-flow of fluids Both counter and parallel-flow of the fluids Only counter-flow of fluids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Among liquids, water has a comparatively high value of thermal conductivity, due to its High viscosity Low density Dense structure Partial ionisation High viscosity Low density Dense structure Partial ionisation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Decreases linearly Increases Remains same Decreases Decreases linearly Increases Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
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