Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ t ∝ √t ∝ 1/t Independent of 't' ∝ t ∝ √t ∝ 1/t Independent of 't' ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low viscosity Grashoff number Prandtl number thermal conductivity viscosity Grashoff number Prandtl number thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Water is normally used as a coolant in the heat exchange equipments mainly because ofits Low viscosity Low density Abundance & high heat capacity High fluidity Low viscosity Low density Abundance & high heat capacity High fluidity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material Has the unit m² /sec All of these Is the ratio of thermal conductivity to thermal capacity Is defined as K/ρ . Cp Has the unit m² /sec All of these Is the ratio of thermal conductivity to thermal capacity Is defined as K/ρ . Cp ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l05 3 x l012 3 x l010 3 x l08 3 x l05 3 x l012 3 x l010 3 x l08 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Decreases linearly Decreases Remains same Increases Decreases linearly Decreases Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
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