Heat Transfer The purpose of floating head in a heat exchanger is to Avoid buckling of tubes Provide support for tubes Decrease the pressure drop Facilitate its lengthening, if needed Avoid buckling of tubes Provide support for tubes Decrease the pressure drop Facilitate its lengthening, if needed ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material Is defined as K/ρ . Cp All of these Has the unit m² /sec Is the ratio of thermal conductivity to thermal capacity Is defined as K/ρ . Cp All of these Has the unit m² /sec Is the ratio of thermal conductivity to thermal capacity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, Nst = f/2, is the __________ analogy. Prandtl Reynolds Colburn None of these Prandtl Reynolds Colburn None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fourier's law of heat conduction applies to __________ surfaces. Neither A and B Isothermal Both A and B Non-isothermal Neither A and B Isothermal Both A and B Non-isothermal ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is the most widely used heat insulating material for pipelines carrying steam? Fireclay refractory followed by aluminium sheet 85% magnesia cement and glass wool Cotton followed by aluminium foil Tar dolomite bricks followed by asbestos Fireclay refractory followed by aluminium sheet 85% magnesia cement and glass wool Cotton followed by aluminium foil Tar dolomite bricks followed by asbestos ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.78 1 0.95 0.78 1 0.95 ANSWER DOWNLOAD EXAMIANS APP
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