Heat Transfer Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be 0.55 0.35 0.45 0.85 0.55 0.35 0.45 0.85 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multipass heat exchangers are used To obtain higher heat transfer co-efficient and shorter tube To reduce the pressure drop For low heat load Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube To reduce the pressure drop For low heat load Because of simplicity of fabrication ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thickness of condensate layer in filmwise condensation depends on the Liquid flow rate from the surface Condensation rate All of these Surface configuration Liquid flow rate from the surface Condensation rate All of these Surface configuration ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer (Cp . μ)/K is termed as the __________ number. Grashoff Prandtl Nusselt Stanton Grashoff Prandtl Nusselt Stanton ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a cold dilute feed to produce thick viscous liquor, backward feeding as compared to forward feeding results in Decreased economy Lower capacity No effect on economy Increased economy Decreased economy Lower capacity No effect on economy Increased economy 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 KA < 0.5kB CPA < CPB KA>2 kB CPA > CPB KA < 0.5kB CPA < CPB KA>2 kB ANSWER DOWNLOAD EXAMIANS APP
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