Heat Transfer Intermittant tube cleaning is possible to be done in case of a __________ evaporator. Basket type Calendria Horizontal tube None of these Basket type Calendria Horizontal tube None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because Heat transfer co-efficient are high There is no mist formation There is no risk of contamination Cost of equipment is lower Heat transfer co-efficient are high There is no mist formation There is no risk of contamination Cost of equipment is lower ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material Is the ratio of thermal conductivity to thermal capacity All of these Has the unit m² /sec Is defined as K/ρ . Cp Is the ratio of thermal conductivity to thermal capacity All of these Has the unit m² /sec Is defined as K/ρ . Cp ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? Sphere Plate All of these Cube Sphere Plate All of these Cube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.95 1 0.78 0.95 1 0.78 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? At low velocity At high fluid velocity When fluid flows past a smooth surface None of these At low velocity At high fluid velocity When fluid flows past a smooth surface None of these ANSWER DOWNLOAD EXAMIANS APP
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