Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l08 3 x l010 3 x l012 3 x l05 3 x l08 3 x l010 3 x l012 3 x l05 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchanger tubes are never made of Copper Stainless steel Lead Plain carbon steel Copper Stainless steel Lead Plain carbon steel ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will Increase Either increase or decrease; depends on the coolant flow rate Decrease Remain unchanged Increase Either increase or decrease; depends on the coolant flow rate Decrease Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Zero Infinity Maximum Minimum Zero Infinity Maximum Minimum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material 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 Is the ratio of thermal conductivity to thermal capacity All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As per Kirchoffs law, the ratio of the total radiating power to the absorptivity of a body depends on the none of the listed here wavelength of monochromatic radiation temperature of the body only nature of material of body none of the listed here wavelength of monochromatic radiation temperature of the body only nature of material of body ANSWER DOWNLOAD EXAMIANS APP
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