Heat Transfer Nusselt number is the ratio of the Heat flux at the wall to that across the entire pipe Temperature difference to the temperature gradient at the wall None of these Temperature gradient of the wall to that across the entire pipe Heat flux at the wall to that across the entire pipe Temperature difference to the temperature gradient at the wall None of these Temperature gradient of the wall to that across the entire pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to Heat the water from 0°C to 100°C To superheat the steam Data insufficient, can Evaporate the water Heat the water from 0°C to 100°C To superheat the steam Data insufficient, can Evaporate the water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam is routed through the tube in case of a __________ evaporator. Long tube vertical Short tube vertical Basket type Horizontal tube Long tube vertical Short tube vertical Basket type Horizontal tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient Factor of safety Non-dimensional factor None of these Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient Factor of safety Non-dimensional factor None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? < 0.1 < 0.5 > 0.6 0.5 < 0.1 < 0.5 > 0.6 0.5 ANSWER DOWNLOAD EXAMIANS APP
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