Heat Transfer The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law. Temperature of the body None of these Nature of the body Wavelength of radiation Temperature of the body None of these Nature of the body Wavelength of radiation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger, one transfer unit means None of these Both A and B A section of the exchanger in which change in temperature of one stream equals the average driving force in the section The size of the exchanger in which heat transfer rate is 1 kcal/hr None of these Both A and B A section of the exchanger in which change in temperature of one stream equals the average driving force in the section The size of the exchanger in which heat transfer rate is 1 kcal/hr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Finned tube heat exchangers give larger area per tube facilitate very large temperature drop through tube wall use metal fins of low thermal conductivity are used for smaller heat load give larger area per tube facilitate very large temperature drop through tube wall use metal fins of low thermal conductivity are used for smaller heat load ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchanger tubes are never made of Lead Stainless steel Plain carbon steel Copper Lead Stainless steel Plain carbon steel Copper ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If Prandtl number is greater than the Schmidt number, then the concentration boundary layer lies inside the thermal boundary layer thermal boundary layer lies inside the concentration boundary layer thermal & concentration boundary layers are of equal thickness none of the listed here concentration boundary layer lies inside the thermal boundary layer thermal boundary layer lies inside the concentration boundary layer thermal & concentration boundary layers are of equal thickness none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiation heat losses from satisfactorily insulated high pressure boilar may be about __________ percent. 26 18 1 7 26 18 1 7 ANSWER DOWNLOAD EXAMIANS APP
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